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in the xy-plane, the graph of the function f is a line. if f(2)=7 and f(12)=1, what is the value of f(7)?
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in the xy-plane, the graph of the function f is a line. if f(2)=7 and f(12)=1, what is the value of f(7)?

User Petur
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1 Answer

2 votes
Given that the function is a line

[f(7) - f(2)] / [7 - 2] = [f(12) - f(2)] / [12 - 2]

[f(7) - 7] / 5 = [1 - 7] / 10

[f(7) - 7] = 5 * [-6] / 10

[f(7) - 7] = - 3

f(7) = - 3 + 7 = 4
User Cheng Yang
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7.9k points
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