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jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1Hint: x > k breaks into x < k or x > k where k is some positive number

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1is it still correct if the arrows go in the same direction when I graph it?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1no the arrows should be going in opposite directions

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1oh so you flip the sign when you make k a negative?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what did you get

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1x> or equal to 12 and x < or equal to 18

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1good, you got it

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you're welcome

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1find the slope of the line passing through the given points. then tell whether the line rises, falls, is horizontal, or is vertical. (7,4) (5,3)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1use the slope formula m = (y2  y1)/(x2  x1)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1in this case (x1,y1) = (7,4) (x2,y2) = (5,3)

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1how do I find out whether the line rises, falls..etc ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what did you get for the slope

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1oh so the line decreases bc it has a negative slope?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you nailed it

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1Do you mind if i ask you questions from time to time ? I'm trying to study for a trig final on monday.

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1sure I can help

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1thanks! alright so this question has the same guidelines as the one we just did but with these coordinates (5/4, 3); (2/3, 3) my friend had an error in her calculator trying to find the slope , but I got m=0 ...im confused

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you're correct, it's 0 how do I know so quickly? notice that the y coordinates are both equal to 3 since the y coordinates are equal, the slope will always be 0 because you have a horizontal line through y = 3

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1all horizontal lines have a slope of 0

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1using m = (y2  y1)/(x2  x1) we get m = (y2  y1)/(x2  x1) m = (3  3)/(2/3  (5/4)) m = 0/(2/3  (5/4)) m = 0

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1oh ok i understand

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1what if the x coordinates are equal? would that make the line vertical?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1and the slope would be undefined

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1how would i graph y=x3?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1do you know how to graph y =  x 

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1i think so? would there be 2 lines?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yes here is your blank xy axis dw:1359244103163:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1the graph of y =  x  looks like this dw:1359244135745:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1to graph y=x3, you just shift over y = x three units to the right

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1im not sure i get you there...

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1imagine you can pick up that v shaped graph and move it around well just move it over 3 to the right units like this dw:1359244315265:dw

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1but how do i know the coordinates to create the v shape

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1i understand the moving it to the right part

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1the sharp point on the V of y = x is at (0,0) move that point over 3 units to the right to get (3,0)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1359244469161:dw

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1yes i understand that but what are the other coordinates for that shape?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1(1,1) is on the original graph y = x move that 3 units to the right to get (4,1)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1359244638800:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1(1,1) is on the original graph y = x move that 3 units to the right to get (2,1)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1359244675721:dw

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1ohhhh so the slope for it is rise 1 over 1?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1for the right half of it, yes

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1dw:1359244723365:dw

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1left half, slope is 1 dw:1359244745927:dw

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1ohhh ok so on the left side for any problem i will always decrease 1 and rise 1?

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1im trying to understand the concept so i can graph any absolute value problem

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1on the left side, you go down 1 and over to the right 1 on the right side, you go up 1 and over to the right 1

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1the problem they gave me was y=x3 would you have to move to graph from (0,0) to (0,3) ? you moved it up 3

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1if it was x  3, then you would move (0,0) to (0,3)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1but it's actually x3

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1would i be able to just plug this in to my calculator ?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yes you should be able to

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1do you know how to graph absolute value equations?

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1I guess I forgot :/

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1what kind of calculator do you have

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1i just found the absolute value button on my TI83

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1and i put it into the y= and i got what you showed me earlier

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1ok great, glad you did

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1Solve the equation. \[4x ^{2}6x+9=0\]

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you can either factor or use the quadratic formula

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1oh wait, one sec

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1no you can't factor, so you'll have to use the quadratic formula

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1how do you know you cant factor this problem?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1D = b^2  4ac D = (6)^2  4(4)(9) D = 36  4(4)(9) D = 36  144 D = 108 because the discriminant is negative, there are no real solutions so that's why you can't factor

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1oh okay, and i can use the discriminant as a test on any problem that looks like this one?

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1yes if the discriminant is a) positive or zero and b) a perfect square then the quadratic can be factored

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1solve the system of linear equations using any method. 2x+3y=47 7x8y=2 2xy+3z=19

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1solve the first two equations for x and y once you have x and y, use them to find z

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1im not sure how i ended up with 111 for y... the answers say its wrong

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1no y should be 9, try it again

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1i did elimination with the first two equations

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1to get them to equal to 14 and 14 so they can cancel out but i keep getting 111

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.12x+3y=47 7x8y=2 8(2x+3y)=8*47 3(7x8y)=3(2) 16x+24y=376 21x24y=6  72x+0y = 370 37x = 370 x = 370/37 x = 10 2x+3y=47 2(10)+3y=47 20+3y = 47 3y = 4720 3y = 27 y = 27/3 y = 9 So x = 10 and y = 9 Use them to find z

NatalieandKayla
 one year ago
Best ResponseYou've already chosen the best response.1Oh! I understand now, thank you so much :)

jim_thompson5910
 one year ago
Best ResponseYou've already chosen the best response.1you're welcome
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