In the equation y=kx , y varies directly with x and k . The constant of variation, k, is 8 .
What is a constant?
A predetermined amount. In algebra, a constant is a number that stands alone or, occasionally, a letter like a, b, or c that denotes a fixed number. 5 and 9 are constants in the formula "x + 5 = 9," for instance.
Since the equation can be written in the form y=kx , y varies directly with x and k . The constant of variation, k, is 8 .
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