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How do you solve this equation?

How do you solve this equation?-example-1
User Netzaffin
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1 Answer

1 vote

Answer:

B. y = -4x - 4

Explanation:

you can solve this problem by plugging values from the table into the equations given to determine which equation works

A. y = 1/4x + 4

lets plug in -1 for x

y = 1/4(-1) + 4

y = -1/4 + 4

y = 3 3/4

3 3/4 is not equal to 0, so option A is wrong

B. y = -4x - 4

plug in 0 for x

y = -4(0) - 4

y = 0 - 4

y = -4

-4 is equal to -4 which is true, option B works, but lets test another value

plug in 1 for x

y = -4(1) - 4

y = -4 - 4

y = -8

-8 is equal to -8

so option B is correct

C. y = -1/4x + 4

plug in 1 for x

y = -1/4(1) + 4

y = -1/4 + 4

y = 3 3/4

3 3/4 does not equal to 8, option C does not work


D. y = 4x - 4

plug in 0 for x

y = 4(0) - 4

y = 0 - 4

y = -4

-4 is equal to -4 which is true, option D works, test another value as well

plug in 1 for x

y = 4(1) - 4

y = 4 - 4

y = 0

0 is not equal to -8 thus option D does not work for all values

User Kassie
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