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romanna [79]
3 years ago
12

A direct variation function contains the points (–8, –6) and (12, 9). Which equation represents the function?

Mathematics
2 answers:
mamaluj [8]3 years ago
7 0

Answer:

Option C. y=(3/4)x

Step-by-step explanation:

we know that

A relationship between two variables, x, and y, represent a direct variation if it can be expressed in the form y/x=k or y=kx

In a proportional relationship the constant of proportionality k is equal to the slope m of the line and the line passes through the origin

so

Find the value of the constant k

For the point (-8,-6)

k=y/x=(-6/-8)=3/4

For the point (12,9)

k=y/x=(9/12)=3/4

<u><em>Note</em></u> A single point was required to find the constant k (because the line passes through the origin)

The equation is equal to

y=(3/4)x

MrMuchimi3 years ago
7 0

Answer:

The answer is C

Step-by-step explanation:

Ed2020

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Answer:

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Step-by-step explanation:

In general, the graph of an n-th degree function can make n-1 turns. However, in specific cases, the number of turns is limited by the number of real zero-crossings of the derivative.

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1. This 5th-degree function can have at most 4 turns. However, the derivative, f'(x) = 5x^4 -3, has only two (2) real zeros. Hence the graph of this function can only have 2 turns.

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2. This 7th-degree function can have at most 6 turns. However, the derivative, f'(x) = -7x^6 -35x^4-12x^2, has an even-multiplicity root at x=0 only. The derivative never crosses 0. Hence the graph makes no turns.

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3/4 of a right angle, 5/4 of a right angle, 5/3 of a right angle, and 2/3 of a full turn
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Answer:

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Answer:

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