Question

Joey throws a ball in the air. The graph shows the height of the ball on the y-axis and the time that the ball is in the air on the x-axis. The top of the graph is missing. After how many seconds does the ball reach the highest point?
A) 2 seconds
B) 4.25 seconds
C) 5 seconds
D) 28 seconds

Answer 1

what do u think

Answer 2

remember x-axis is time

Answer 3

I dont know thats why i'm asking and i understand that but what am i suppose to solve an equation for the parabola?

Answer 4

its much simpler than that

Answer 5

just look at the x-axis

Answer 6

ok . . .

Answer 7

the blue curve is cutting the x-axis at somewhere around 0 and 4, right ?

Answer 8

right. . .

Answer 9

Starting from 0,
notice that the blue curve is shooting UP... and after 2, the curve seems to fall down... and cut the x-axis again at t=4 right ?

Answer 10

yes

Answer 11

so at what time the curve reaches its highest value ?

Answer 12

at t = 2, it has to reach its highest value...

Answer 13

yeah thats where the graph is at its highest but cant see it.

Answer 14

good, u have answered ur own question :)

Answer 15

OOOHHHH! so its A.

Answer 16

yep !

Answer 17

Alright i understand thanks! :)

Answer 18

np.. u wlc :)