SOLUTION: We are struggling with these problems. Thank you Find the variation constant and an equation of variation where y varies directly as x and y=80 when x=10. The variation constan

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Question 132151: We are struggling with these problems. Thank you
Find the variation constant and an equation of variation where y varies directly as x and y=80 when x=10.
The variation constant is K=_____
The equation of variation is y=_____
Answer by rapaljer(4671) About Me  (Show Source):
You can put this solution on YOUR website!
y=kx
80=k*10
k=8

The equation of variation is y=8x.

See my explanation of this topic by clicking on my tutor name "rapaljer" anywhere in algebra.com. Click on the first link on my homepage which is "Basic and Intermediate Algebra: One Step at a Time." Go to Intermediate Algebra, Chapter 2, and look for Section 2.09 Ratio and Proportion and Variation. Variation is the second half of this section. See also MATH IN LIVING COLOR for this topic.

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