A triangle is shown Below based on this triangle which one of the following statements is true

Simonne used the following steps to simplify the given expression. 12 - 3(-2x + 4) step 1: 12 + (–3)·(–2x) + (–3)·(4) step 2: 12 + 6x + (–12) step 3: 12 + (–12) + 6x step 4: 0 + 6x step 5: 6x what property of real numbers was used to transition from step 3 to step 4? a. identity property of addition b. inverse property of addition c. associative property of addition d. commutative property of addition

What is the name used to describe a graph where for some value of x, there exists 2 or more different values of y?

The parabola x = y² - 9 opens: a.)up b.)down c.) right d.)left