Write an appropriate direct variation equation if y = 8 when x = 4.

For this case we have that by definition, a direct variation is represented as:

Where:

k: It is the constant of proportionality

So:

Substituting the values we have:

Finally, the proportionality constant is:

the answer is d

step-by-step explanation:

y+3=-4(x-2)

y+3=-4x+8

  -3         -3  

y=-4x+5

b.-4 units

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