Can someone help me I’ll mark as brainliest

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

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)

John used linear combination to solve the system of equations shown. he did so by multiplying the first equation by -3 and the second equation by another number to eliminate the x-terms. what number did jonas multiply the second equation by? 4x-6y=23x+5y=11