Variation + quadratic

Presentation

•

Mathematics

•

9th - 12th Grade

•

Easy

Jesus Molina

Used 1+ times

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4 Slides • 7 Questions

Direct and Inverse Variation + Quadratic Videos and notes

Multiple Choice

The cost c varies directly as the number of n pencils is written as

c = kn

k = cn

n = k/c

c = k/n

Multiple Choice

The speed r of a moving object is inversely proportional to the time t travelled is written as

r = kt

r = k/t

t = kr

t = r/k

Multiple Choice

Which of the following types of variation states that the decrease of one quantity results to the increase of the other quantity?

Direct Variation

Inverse Variaton

Joint Variation

Combined Variation

Multiple Choice

If y varies directly as x and y = 24, when x = 3, then what is the value of k?

Multiple Choice

The height of an object thrown into the air can be modeled by the formula h(t) = -16t² + 70t + 95, where h(t) is in feet after t seconds.
What is the height of the object after 5 seconds?

95 feet

45 feet

70 feet

171.56 feet

Multiple Choice

A ball is thrown into the air with an upward velocity of 100 ft/s. Its height, h, after t seconds is given by the function
h = -16t² + 64t + 960.
When did the ball hit the ground?

10 seconds

2 seconds

5 seconds

7 seconds

Multiple Choice

A dolphin jumps from the water. The equation h = -16t² + 80t models the dolphin's height at any given time, t. What is the maximum height the dolphin jumps?

1 foot

5 feet

96 feet

100 feet

Direct and Inverse Variation + Quadratic Videos and notes

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