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kolezko [41]
3 years ago
11

A football is kicked into the air. The height of the football can be modeled by the equation

Mathematics
1 answer:
Alinara [238K]3 years ago
6 0

Answer:

x = 0 and x = 1

Step-by-step explanation:

Given that,

A football is kicked into the air. The height of the football can be modeled by the equation :

h = -16x^2 + 16x

Where

h is the height reached by the ball after x seconds

When it touches the ground, h = 0

So,

-16x^2 + 16x=0\\\\16x(-x+1)=0\\\\x=0\ and\ x=1

So, it will touch the ground at x = 0 and x = 1 seconds.

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First to find the gradient, we use the formula y2-y1/x2-x1.

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Now we sub in:
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Now we find the y-intercept (b). Since the y-intercept isn’t shown, we can sub in the coordinates to find it.

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