How does it work?

Option 1: Just fill in the form with your homework question, and someone will respond shortly with an answer.


Option 2: Take a photo (or link) of your question, and email or text it to us.

Like us?

Finding the y-intercept

Q: The equation of a line is y=2x -7. What is the y-intercept?

A: It is easy enough to simply compare the equation to the standard form, y=mx+b, and see that b = -7.

However, the general way to find the y-intercept is to set x=0, and solve for y.

y = 2(0) – 7
y = 0 – 7
y = -7

Either way you do it, the y-intercept is -7. This is the location where the line crosses the y-axis.