What is the constant of variation for y=4x?

-4

Step-by-step explanation:

Since the equation can be written in the form y= KX, y varies directly with x and k. The constant of variation, k is -4. -4

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answer: (c) m∠qpo + (2x + 16)° = 180°

step-by-step explanation:

the opposite angles of a quadrilateral are supplementary.

so, ∠o + ∠q = 180°   and   ∠p + ∠r = 180°

since ∠r = 2x + 16°, we can use substitution as follows:

∠p + ∠r = 180°

∠p + (2x + 16)° = 180°