What is nine minus x is greater than ten

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

Average acceleration: i have no idea how to do this.

Select 2 statements that are true about the equation y+6=-10(x-3).1) the slope of the line is -102) the slope of the line is 33) one point on the line is (3,6)4) one point on the line is (3,-6)