Algebra2

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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 -

    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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