## iloveboys Group Title Can someone please help me..?? Consider the equation 3x + 5y = 45. Part 1: On your own paper, graph this equation using the slope-intercept method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use complete sentences and correct grammar. Part 2: On your own paper, graph this equation using the intercepts method. In the space provided, explain, in words, each step of the procedure you used. Make sure to use complete sentences and correct grammar. 2 years ago 2 years ago

1. iloveboys

liliakarina!

2. iloveboys

3. neverforgetvivistee

alright, so the slope-intercept form is y=mx+b let's try to get 3x + 5y = 45 to look like that, we can do that by subtracting 3x from both sides 5y = 45 - 3x but we can't have anything in front of the y, so to get rid of it we can divide everything by 5 y = 9 - 3/5x just rearrange it y= -3/5x + 9 ok, so the one without the x is your y-intercept (in this case is 9). First thing you do is graph the y intercept. Look for 9 on the y axis. |dw:1323572454380:dw| now you're slope is -3/5. Let's go 3 down, and 5 to the right. (we go 3 down because the 3 is negative. You only count one number as negative when your fraction is negative. You could even do the 3 positive and the 5 negative.)|dw:1323572523105:dw|

4. neverforgetvivistee

from 9, you do 3 down and 5 to the right

5. iloveboys

is that it for both part 1 and 2??

6. neverforgetvivistee

yes

7. neverforgetvivistee

did i mess up?

8. iloveboys

no... no. thanku so much... also think u cld do this? Consider the line that passes through the point (3, -6) and has a slope of 4. Part 1: Write the equation of this line using point-slope form. Part 2: Using your equation from part 1, rewrite this equation in slope-intercept form. Make sure to show all of your work. Part 3: Using your equation from part 2, rewrite this equation in standard form. Make sure to show all of your work.

9. hot_cutie

why u like her but not me?

10. neverforgetvivistee

y – y1 = m(x – x1)

11. iloveboys

? what is going on? please no fighting on hear!

12. hot_cutie

13. iloveboys

2......??

14. neverforgetvivistee

ok, so 3,-6 3 is your x and -6 is your y let's plug that into the formula y – y1 = m(x – x1) y - - 6 = 4(x-3) Now let's try to put this in y=mx+b form, use the distributive property with 4(x-3) and two negatives make a potisitive in y - - 6 y + 6 = 4x - 12 subtract 6 from both sides y = 4x - 2 ok cool, now we have it in slope intercept form remember to always graph your y-intercpet first (which is -2) on the y-axis |dw:1323573083990:dw| from that point, go 4 up, 1 right|dw:1323573115822:dw|

15. neverforgetvivistee

sorry i took a long time i almost forgot how to do it

16. iloveboys

its alright and then u got to do part three if u will please!

17. neverforgetvivistee

ok so standard form is Ax + By = C we have y = 4x - 2 we can get into standard form by subtracting 4x from both sides -4x + y = -2 but we can't have a negative x, we can get rid of the negative by multiplying everything by -1 4x-y=2

18. iloveboys

thank u so much!

19. neverforgetvivistee

np :)

20. bob06

any other questions?

21. iloveboys

not atm thanks everyone!