Explain how you can tell whether a parabola opens upward, downward, to the
left, or to the right

Step-by-step explanation:

If the x is squared, the parabola is vertical (opens up or down). If the y is squared, it is horizontal (opens left or right). If a is positive, the parabola opens up or to the right. If it is negative, it opens down or to the left.

c 1 hour

step-by-step explanation:

m = 2e

m = 2 so 2 = 2e

1 = e

i think it will be zero as slope has a formula of difference between initial and final distance divided by itz time interval