Q. Which equation has a constant of proportionality equal to 21 ?Choose 1 answer:(A) y=2x(B) y=4x(C) y=63x(D) y=43x
Identify Constant of Proportionality: Identify the constant of proportionality in each equation.The constant of proportionality is the coefficient of x in each equation.
Check Option (A): Check option (A) y=2x. The constant of proportionality is 2. Compare it to (1)/(2). 2 is not equal to (1)/(2).
Check Option (B): Check option (B) y=4x. The constant of proportionality is 4. Compare it to 21. 4 is not equal to 21.
Check Option (C): Check option (C) y=63x.Simplify the fraction63 to 21.The constant of proportionality is 21.Compare it to 21.21 is equal to 21.
Check Option (D): Check option (D) y=43x.The constant of proportionality is 43.Compare it to 21.43 is not equal to 21.
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