Question

How to find the y-intercept given `y = x^2 + 2x - 3`?

Answer 1

The `y` intercept is a point on the `y`-axis. Where the `x`-coefficients are all `0`.

Put in `0` for `x` and find `y`.

`y= (0)^2+2(0)-3=3`

The `y`-intercept is `-3` (or `(0,-3)` depending on your grader's preference).