Question

What is the equation of a line with a -y-intercept of -5 and a slope of 8.

a. y=8x+5
b .y=8x-5
c. y=-5x+8
d. y=-5x-8

Answer 1

B

Explanation:

y = mx + b

m represents slope and b is the y intercept

so 8x is mx in this equation and -5 is b

Answer 2

B

Explanation:

The equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

Here m = 8 and c = - 5, thus

y = 8x - 5 → B