Question

What is the equation of a horizontal line that has a y-intercept of 3? A. y=-3 B. y=3 C. y=1/3 D. -1/3

Answer 1

y = mx + b

b is the y-intercept
m is the slope

the answer would be B

the slope is 0, which means 0x = 0 = nothing so the equation would have to be left with y=3