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

slope intercept can be constrcuted from a given point and a slope:

y=mx-mPx+Py

Answer 2

A is right.

Answer 3

or in this case we could just as easily sub in the point and see what fits

Answer 4

-2(2) = -4 so the first one looks good for it