The table shows the approximate height of a projectile x seconds after being fired into the air.

Question

Which equation models the height, y, x seconds after firing?

y = –10(x)(x – 5)
y = 10(x)(x – 5)
y = –10(x – 5)
y = 10(x – 5)

Answer 1

The equation that models the height, y, x seconds after firing is:

y = –10(x)(x – 5)