Question

Which equation represents a line a slope of -2 and a y- intercept of 0?

X = -2
Y= -2
Y= 0
Y= -2x

Answer 1

Y= -2x the formula for a line is y= mx + b. m is the slope (rise over run, in this case it is -2) and b is the y intercept.

Answer 2

remember that your formula is: y = mx + b, in which:

y = y, m = slope, x = x, b = y-intercept

If y intercept = 0, and slope = -2

y = -2x + 0, or y = -2x

(D) y = -2x is your answer

hope this helps