Is the y intercept a point on the line?

yes, on the line x=0 (which is the y axis) where it crosses that line (y-axis) is the y intercept.

the exact point is (0,yintercept)

Yes, the y-intercept is a point on the line. To understand why, let's first define what the y-intercept is. In a linear equation of the form y = mx + b, where m is the slope and b is the y-intercept, the y-intercept is the point where the line intersects the y-axis.

To determine the y-intercept, you can set the x-coordinate to 0 in the equation. This means that if you substitute x = 0 into the equation, you will get the y-coordinate of the y-intercept. For example, in the equation y = 2x + 3, when x = 0, you get y = 2(0) + 3 = 3. So the y-intercept is the point (0, 3), which lies on the line.

Therefore, the y-intercept represents a point on the line where it crosses or intersects the y-axis.