Question

6) Write an equation in slope-intercept form of the line through points (-2, 6) and (7, -1).



7) Write an equation in point-slope form for the line that goes through the point (3, -8) and has a slope of -2.
Can someone help i dont need anwser i just need help

Answer 1

Have you drawn a quick sketch of the two points on an xy plane?

Answer 2

where are you stuck?

Answer 3

do u knoe formulas

Answer 4

(y-y1)/(y2-y1)=(x-x1)/(x2-x1)
for first que
(y2-y1)=m(x2-x1)

Answer 5

have u got it

Answer 6

Im sorry im so confused

Answer 7

slope=(y2-y1)/(x2-x1)
point slope form=
y-y1=m(x-x1)

Answer 8

m represents slope

Answer 9

m=(-1-6)/(7+2)
m=-7/9
slope is decreasing
now put it in point slope form can you?

Answer 10

ohh okay is see how you got that

Answer 11

(-2, 6) and (7, -1):
6 = -2m + b
-1 = 7m + b

b = 6 + 2m
b = -7m - 1

b = b
6 + 2m = -7m - 1
7m + 2m = -6 - 1
9m = -7
m = -7/9

b = 6 + 2(-7/9)
b = 6 -14/9
b = 54/9 - 14/9
b = 40/9

y = -7/9(m) + 40/9