Which of the following reasons allows her to write these sums?

The parabola y = x² - 4 opens: a.) up b.) down c.) right d.) left

Will give brainliestbased on the topographic map of mt. st. helens, what is the contour interval if the volcano height is 2,950 m?

What is the slope of the line passing through the points (3, 3) and (5, 7) ? 1. 2 2. 1/2 3. −2 4. −1/2