Question

On the graph of the equation 2x + 5y = –30, what is the value of the y-intercept?

Answer 1

plug in x = 0 and solve for y to get the y-intercept

Answer 2

You are wanting to find the value where this equation crosses the y axis. When does it cross the y axis? It crosses the y axis when x = 0.

So, substitute 0 for x in the equation and then solve.

Answer 3

so the y-intercept would be 6?

Answer 4

2(0) + 5y = -30
0 + 5y = -30
5y = -30
y = -30/5
y = -6

you were close, but forgot the negative

Answer 5

or 2x + 5y = –30, put that in y=mx+b form, so 5y=-2x-30, you need to get y by itself so divide everything by 5, -30/5=-6 , so -6, you Are just dividing the b value by the y value.