Question

Find the equation of the line that passes through the pair of points. Write your answer in slope-intercept form:
(-2, 8), (1, -1)

Answer 1

@whpalmer4 @mathmale @mathslover @ganeshie8

Answer 2

Is slope-intercept form: y=mx+b ?

Answer 3

yes

m = slope
b = y intercept

Answer 4

start by finding the slope m

Answer 5

\[m=-3\]

Answer 6

@campbell_st

Answer 7

@Kainui

Answer 8

well I think you need to re-work the slope calculations.

Answer 9

\[m=\frac{ (y _{2}-y _{1}) }{ (x _{2}-x _{1}) }\]
Right?

Answer 10

oops... sorry the slope is correct

so the line is

y = -3x + b

substitute either point to find the value of b

Answer 11

likw -2=-3(8)+b or just x or y by themselves?

Answer 12

b=-22?
@Hero

Answer 13

\[\huge y-y _{1}=m(x-x _{1})\] You can use this and transform it into y =mx+b where y1 and x1 are (-2,8).

Answer 14

y-8=m(x-(-2))?

Answer 15

-8y=-3x-22?
I'm lost

Answer 16

@whpalmer4 @Hero @ganeshie8

Answer 17

Sorry...OS doesn't work 90% of the time for me.