Question

The equation of a line is x+4y=15

Answer 1

The y-intercept of the line is the value of "y" when x=0
Therefore:
if x=0
0+4y=15
4y=15
y=15/4

Answer: A.  15/4

Answer 2

To find the y intercept of the line we need to know x=0

x+4y=15 The original problem.

x(0)+4y=15 X=0

4y=15   Simplified

x=3.75 or 15/4  Divide by both sides

Easy answer: A

There's your answer! Hope it helps