Question

Please help - ACT math practice test

Answer 1

Answer:

K

Step-by-step explanation:

Let's look at the equation.

$h=-at^{2}+bt+c$

This is a standard negative polynomial equation.

So changing the c value will basically move the graph up/down.

$I$ is true because if it moved up or down, the h-intercept would change.

$II$ is true because if it moved up or down, the maximum would change.

$III$ is true because if it moved up or down, the t-intercept would be moved left or right.