Question

Which of the following has a slope of 2 and a y-intercept of -4?

y = 2x + 4
y = -2x + 4
y = -2x - 4
y = 2x - 4

Answer 1

y = 2x - 4

Explanation:

y = ax + b

a = slope

b = y-int

so, in y = 2x - 4

a = slope = 2

b = y-int = -4