Posted by **Hollie** on Tuesday, September 27, 2011 at 1:39pm.

There are 52 blades of grass in 2 square inches of lawn. there are 580 blades of grass in 8 square inches of the same lawn. what equation models the y blades of grass found in x square inches of lawn?

- Algebra2 -
**Steve**, Tuesday, September 27, 2011 at 3:20pm
Assume that y = kA + c, if the grass grows at a uniform density.

52 = 2k + c

580 = 8k + c

so, 528 = 6k

k = 88

So, we have y = 88A + c

52 = 176 + c

c = -124

y = 88A - 124

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