How do you find y-intercept of the line of a graph

If you know what the formula y = mx +b is, then you know that mx is the slope and b is the y-intercept.

Let`s suppose the equation is y = 2x + 1. The line should be intersecting with the coordinate (0, 1) on it`s way across.

The y axis will ALWAYS be the vertical line. Whatever coordinate the line crosses on the y-axis is the y-intercept.

The y-intercept can also be a negative number.

Hope that helps. If you have any questions just comment them.

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