Question

What is the y intercept of the graph of the line given by the equation 3y+4x=15

Answer 1

The y intercept is where the line crosses the y axis or where x=0

so set x=0 and solve for y

3y+4x=15
x=0
3y+4(0)=15
3y=15
divide by 3
y=5

the y intercept is at y=5 or the point (0,5)