Q. Which equation has a constant of proportionality equal to 3 ?Choose 1 answer:(A) y=58x(B) y=31x(C) y=41x(D) y=618x
Understand concept of constant: Understand the concept of constant of proportionality. The constant of proportionality in an equation of the form y=kx is the value of k, where k is a constant.
Identify constant of proportionality: Identify the constant of proportionality in each given equation.For equation (A) y=58x, the constant of proportionality is 58.For equation (B) y=31x, the constant of proportionality is 31.For equation (C) y=41x, the constant of proportionality is 41.For equation (D) y=618x, the constant of proportionality is 618.
Simplify constants if necessary: Simplify the constants of proportionality if necessary.For equation D, simplify 618 to get the constant of proportionality.618=3
Compare to desired value: Compare the constants of proportionality to the desired value of 3. Equation (A) has a constant of proportionality of 58, which is not equal to 3. Equation (B) has a constant of proportionality of 31, which is not equal to 3. Equation (C) has a constant of proportionality of 41, which is not equal to 3. Equation (D) has a constant of proportionality of 3, which is equal to 3.
Choose equation with constant: Choose the equation with the constant of proportionality equal to 3. The equation with the constant of proportionality equal to 3 is (D) y=618x.
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