Question

Write the equation of a line in slope-intercept form that has a slope of -2 and passes through the point (2, -8).
A. y = -2x - 4
B. y = -2x - 8
C. y = -2x + 18
D. y = -2x – 12

Answer 1

use y=mx+b :)

we know that m= slope, which they give you. so slope=m=-2 :)

and now you need to find the y-intercept. aka "b"

so plug in the values they give you like this :)

-8=(-2)(2) + b

so you get -8 = -4 + b

isolate the b by adding 4 to both sides :)

and what do you get? :)

from there, use your "b" value and add it into the equation!

Your answer will be y=-2x _________

we don't know if it will be + b or -b yet! solve and you will know! :D