Pearson Algebra 1 Common Core, 2015
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Pearson Algebra 1 Common Core, 2015 View details
2. Direct Variation
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Exercise 1 Page 304

Is the ratio of two variables a constant?

Direct Variation?: Yes
Constant of Variation: 3

Practice makes perfect
A direct variation function follows the form y= mx, where x represents input values, y represents output values, and m represents the constant of variation. Let's consider the given function. 6y=18xSince the given function is not in the form of y= mx, let's try to rewrite it in this form by isolating y.
6y=18x
y=3x
We were able to write the equation in the form y= mx, so we know that it is a direct variation. We can also identify the constant of variation. y= 3x The constant of variation is 3.