## ghazi 3 years ago ............... DP

1. LonelyandForgotten

huh? :D

2. ghazi

3. LonelyandForgotten

so what shall we do.. i still cant find it :P

4. ghazi

stop pretending , put up your questions now

5. LonelyandForgotten

hahaha... no im not, seriously i cant find it :(

6. ghazi

question?

7. LonelyandForgotten

well, i guess i will just work on something else in math, i will do that when i find it :P

8. ghazi

okay next science

9. LonelyandForgotten

that powerpoint? i am going to do that tonight :)

10. ghazi

huh

11. LonelyandForgotten

hehe.. yes :)

12. ghazi

@LonelyandForgotten here

13. LonelyandForgotten

here it is :P

14. ghazi

wait a sec :)

15. LonelyandForgotten

sure :D

16. LonelyandForgotten

okay.. :P

17. LonelyandForgotten

haha this is funny :D

18. ghazi

lol i am editing it, there are some grammatical mistakes, like in third slide, there should be comma after well

19. LonelyandForgotten

sure, edit it the way you like :)

20. ghazi

yea yea :D

21. LonelyandForgotten

:)

22. ghazi

here is your edited one, it is brilliant and indeed you are genius, just a few minor changes are there

23. LonelyandForgotten

oh thanks! :D

24. ghazi

25. ghazi

and find the places where i have done editing

26. LonelyandForgotten

yes i can see some :D

27. ghazi

now maths lol

28. ghazi

@LonelyandForgotten finally no maths, okay great

29. LonelyandForgotten

yep, no maths today :P

30. ghazi

okay

31. LonelyandForgotten

can you help with ordered pairs? :/ thats easyy stuff, i cant do that :D

32. ghazi

33. LonelyandForgotten

can *

34. ghazi

then post what you can't

35. LonelyandForgotten

okay well one is.. Determine whether the ordered pair (2, 15) is a solution of y = 4x - 7.

36. ghazi

put the value of x=2 and y=15 if this satisfies the equation then it is a solution else it is not like y=15, x=2 15=4*2-7 15 can't be equal to 8-7 which is 1 so as 15 can't be =1 therefore it is not a solution of this y=4x-7

37. LonelyandForgotten

umm..okay i think i got that :D

38. ghazi

next

39. LonelyandForgotten

umm this... :D A plumbing company charges \$50 for a service call and \$15 per hour. They went on a 3-hour job. How much did the company earn? A. \$195

40. LonelyandForgotten

sorry.. A. \$195 B. \$165 C. \$95 D. \$65

41. ghazi

well, \$50 is charge and extra of \$15 per hour so for three hours it will be \$15*3=\$45 and \$50 is service call charge so total of \$50+\$45=\$95 okay?

42. LonelyandForgotten

hmm... wait a sec :D

43. ghazi

44. LonelyandForgotten

most of the questions are like this, Determine whether the ordered pair (5, 3) is a solution of y = 3x – 4. .... i just wanna know how to solve those :/

45. ghazi

look in all these equations just put x=5 and y=3 actually the content of bracket (5,3) are the values of x and y (x,y) now if putting x=5 and y=3 in the equation y=3x-4 satisfies then it is a solution else not now put x=5 and y=3 3=3*5-4=15-4=11 3=15-4 which is not correct if we would have obtained 3=3 then it must be the solution but we got 3=11 which is false so its not a solution

46. ghazi

clear?

47. LonelyandForgotten

i dont get it :/ where did the 15 and 11 come from?

48. ghazi

@LonelyandForgotten ??

49. LonelyandForgotten

i am here.. :D

50. ghazi

well at the place of x in the equation put x=5 and at y put y=3 now y=3x-4 put y=3 and x-5 3=3*5-4 ------------ 3*5= 15 3=15-4------------15-4=11 3=11 this is false , clear?

51. LonelyandForgotten

okay it seems confusing but i will go over this a few times later, but thanks :)

52. ghazi

just put y= its value and x= the value of x as in ordered pair in the equation and if both the sides are equal you will have it as solution else no

53. ghazi

54. ghazi

next?

55. LonelyandForgotten

please can we stop for now.. i dont wanna do this :(

56. ghazi

one more

57. LonelyandForgotten

umm.. are you sure? :D

58. ghazi

hahah am i sure come on keep asking

59. LonelyandForgotten

This is Last one.. please 7. Use a table of solutions to find the ordered pair solution for y = 4x – 6 when x = 10. A. (34, 10) B. (10, 34) C. (10, 8) D. (8, 10)

60. ghazi

no after this you're gonna do it unless you're finished :)

61. LonelyandForgotten

nope im not even close to being done :P

62. ghazi

if we put x=10 in the equation y=4x-6 we will get y= 4*10-6 , just at the place of x put x=10 y=40-6 y=34 therefore your ordered pair is (10,34) which means when x=10 , y=34 clear?

63. LonelyandForgotten

yes clear! :P

64. ghazi

hmm next ? unless you are finished

65. LonelyandForgotten

yes i am finished, now thanks! :P lol

66. LonelyandForgotten

actually no.. sorry :)

67. ghazi

next

68. ghazi

question ? :)

69. LonelyandForgotten

70. ghazi

okay :)

71. LonelyandForgotten

this :D

72. LonelyandForgotten

73. LonelyandForgotten

74. ghazi

quadratic equations are those whose degree is two like the equation in which maximum power of x is 2 and minimum too like \[x^2+x+2=0, x^2+1=0, x^2=0\] equations in which power of x is two are quadratics ,so this type of equations are not quadratic , \[x+1=0, x^3+3x^2+x+3=0\] in quadratic power of x must be 2

75. ghazi

so your answer is option D cuz its cubic x has power 3 clear?

76. LonelyandForgotten

hmmm.. alright :)

77. ghazi

next

78. LonelyandForgotten

whats a parabola?

79. ghazi

its a conic section, created from the intersection of a right circular conical surface and a plane parallel to a generating straight line of that surface. like consider this |dw:1353988143775:dw| its a parabola and every quadratic equation represents a parabola so all the equations with degree two which means power of x should be 2 represents a prabola

80. ghazi

?? clear??

81. LonelyandForgotten

|dw:1353988155323:dw|

82. LonelyandForgotten

is it B?

83. ghazi

lol its B

84. LonelyandForgotten

sorry for my bad drawing :P lol thanks !! :D

85. ghazi

A- straight line C- cubic curve D- hyperbolic so its B clear?

86. LonelyandForgotten

yes clear thank you! :D

87. ghazi

next ?

88. LonelyandForgotten

hmm should i draw the next question or just do screen shot of it, i think drawing would be too slow :P

89. ghazi

take snap shot and attach it here fast

90. LonelyandForgotten

alrighty :)

91. LonelyandForgotten

there you go :D

92. ghazi

do you know what is vertex? if not then remember every parabola has lowest and highest point that point is called as vertex like the point where curve takes a turn here in this picture its (-2,1) clear??

93. ghazi

just see the point in the graph where parabola take,s turn at the bottom

94. LonelyandForgotten

ohh hmm i didnt know that well thanks that helps a lot i think i can do this now :D

95. ghazi

great next??

96. LonelyandForgotten

noo i will finish this now :D

97. ghazi

98. LonelyandForgotten

what does X-intercepts mean?

99. LonelyandForgotten

hellloo :P

100. ghazi

well x intercept means where the curve cuts the x axis or where the line meets x axis here in an example|dw:1353988840083:dw| in this graph we can see that line cuts x axis at 2,0 so x intercept is 2 and y is 3

101. ghazi

lol let me explain ;)

102. ghazi

intercept simply means the point where curve cuts the axes okay?

103. LonelyandForgotten

huh? :/

104. ghazi

what is it not clear?

105. LonelyandForgotten

|dw:1353989048953:dw| you mean these things?

106. ghazi

its the point on axes like x axis or y where the curve cuts it okay like take an example of line |dw:1353989013085:dw| so that point 4, 0 says line cuts x axis at 4 so x intercept is 4

107. ghazi

yes those things , where line passes the axis

108. LonelyandForgotten

hmm alright i understand now, thanks :D

109. ghazi

|dw:1353989111817:dw|

110. LonelyandForgotten

so the answer is (-3,3) ?

111. ghazi

no intercept will always have either x=0 or y=0 so it could be (4.0) or (0,3)

112. LonelyandForgotten

but it cant be 4 because line crosses at 3 :/

113. ghazi

intercept is the length of or part of either axis where line cuts it so for x intercept you have to put y coordinate=0 and for y you have to put x=0 yes x intercept is 2 because line cuts x axis at 2 and y intercept is 3 cuz line cuts y at 3

114. ghazi

clear?

115. LonelyandForgotten

but itc cant be 2!! it has to be one of the answer choices

116. LonelyandForgotten

it*

117. ghazi

show me the question please if it asks for x intercept then it would be, 2,0 or if it asks for y then it would be 0,3 show me question please

118. LonelyandForgotten

here you go

119. ghazi

we just did it lol come on are you awake

120. LonelyandForgotten

wait sorry wrong question !! my bad :(

121. LonelyandForgotten

wait :D

122. ghazi

quick ;)

123. LonelyandForgotten

there! :D

124. ghazi

look in to th graph it cuts x axis twice at -1 and at -3 so can you find what are the x intercepts?

125. ghazi

remember y would be zero

126. LonelyandForgotten

is it A? im not really sure :/

127. ghazi

come on if it is cutting x axis at -1 and -3 then x intercepts are -3,0 and -1,0 , silly :) clear?

128. LonelyandForgotten

hmm okay got it! :D thanks :D

129. ghazi

next ? :)

130. LonelyandForgotten

wait pelase

131. ghazi

sure

132. LonelyandForgotten

133. ghazi

hehe

134. LonelyandForgotten

:D

135. ghazi

136. LonelyandForgotten

|dw:1353989991234:dw| here is your question ;)

137. ghazi

helloooooooooooooooo?

138. LonelyandForgotten

heheheh :D

139. ghazi

OMG i was scared of this lol wait a sec

140. LonelyandForgotten

are you going to erase it :(

141. ghazi

no wait

142. LonelyandForgotten

where did you go sweetie :(

143. ghazi

|dw:1353990129350:dw|

144. LonelyandForgotten

heyyyyy woww :D nice!! ;)

145. LonelyandForgotten

thank you :)

146. ghazi

i am all here for my baby bunny , now question please

147. ghazi

its place to study not for romance ;)

148. LonelyandForgotten

hehehe :D i know ;) lets carry on :D

149. ghazi

post it :D

150. LonelyandForgotten

151. LonelyandForgotten

152. ghazi

come on , hey shall we delete those cuz moderators will ban us lol i have taken photo of it

153. LonelyandForgotten

hmm okay :(

154. ghazi

okay leave it as it is :) <3 and baby next question please

155. LonelyandForgotten

156. ghazi

157. ghazi

next question??

158. ghazi

i know you are doing something again

159. LonelyandForgotten

|dw:1353990534628:dw| wow sorry that took too long :P

160. ghazi

cant you judge , x should have power of 2 so which one it is??

161. LonelyandForgotten

B. ?

162. ghazi

correct :)

163. LonelyandForgotten

hmm great thank you :D

164. ghazi

next?

165. LonelyandForgotten

hmm i wont draw this time :D

166. ghazi

parabola always have power 2 okay and its drawn up side which means positive so its B , clear?

167. LonelyandForgotten

ohh okay :D thank you! :D

168. ghazi

next?

169. LonelyandForgotten

|dw:1353991046364:dw|

170. ghazi

what to do in this?? lol

171. LonelyandForgotten

should i post screen shot instead lol ?

172. ghazi

what you are supposed to find in this question? vertex?

173. LonelyandForgotten

yes find the vertex :D

174. ghazi

and there is no coordinates hahahahaha take snapshot again lol

175. LonelyandForgotten

hmm alright im sorry :( i tried.. :'(

176. ghazi

do it now :)

177. LonelyandForgotten

there you go :(

178. LonelyandForgotten

sorry :(

179. ghazi

baby, look it turns at x=1 and y=4 that is the top point of parabola so its (1,4) okay :D ?

180. LonelyandForgotten

okay :D sorry :D this is funny though :D

181. ghazi

next ?

182. ghazi

lol its really funny hehe

183. ghazi

next??

184. LonelyandForgotten

I'm thinking it is A. right?

185. ghazi

oh no, its D, -1,0 and 3,0

186. LonelyandForgotten

oh crap sorry i forgot it is negative :(

187. ghazi

look to represent x intercept we write it like (x,0) because y is zero for x intercept and for y intercept we write it like (0,y) cuz x =0 so it cant be A ever cuz that shows y coordinate and you have to find x clear??

188. LonelyandForgotten

yes clear thank you :) this is the last question :)

189. LonelyandForgotten

yes clear thank you :) this is the last question :)

190. ghazi

next, i know this is not the last one there are 10

191. LonelyandForgotten

would you like to see proof?

192. ghazi

sure

193. LonelyandForgotten

it is there :D

194. ghazi

next quiz baby :)

195. LonelyandForgotten

its done :)

196. ghazi

next quiz :) ??

197. ghazi

198. LonelyandForgotten

sure :P

199. LonelyandForgotten

200. LonelyandForgotten

thank you! :D

201. ghazi

OMG which two were incorrect and why you did it??

202. ghazi

i have give right answer to every question you did it knowingly :(

203. LonelyandForgotten

my fault i chose the wrong answers :/

204. LonelyandForgotten

but thank you :D

205. ghazi

come on you cant be that silly :(

206. LonelyandForgotten

i didnt know im sorrry :(

207. ghazi

208. ghazi

??

209. ghazi

@LonelyandForgotten where is my drawing ?? and how come your drawing appeared again :(

210. LonelyandForgotten

wait a minute, this isnt the right one :/ we were on @ghazi :) not dating place

211. ghazi

oops sorry lol

212. LonelyandForgotten

but all that stuff is here,how come it all moved here?

213. ghazi

i can't believe this i don't know what's happening that's why i am confused lol