I need help with Algebra!

Find an equation of the secant line containing (1,f(1)) and (2,f(2)).
f(x)=8/x+7

f(x) = (8/x) + 7
f(1) = (8/1) + 7 = 8 + 7 = 15
f(2) = (8/2) + 7 = 4 + 7 = 11
Slope is (11 - 15) / (2 - 1) = -4/1 = -4
Line is y = -4x + 19

Or did you mean:
f(x) = 8 / (x + 7)
f(1) = 8 / (1 + 7) = 8/8 = 1
f(2) = 8 / (2 + 7) = 8/9
Slope is ((8/9) - 1) / (2 - 1) = -1/9
Line is y = (-1/9)x + (10/9)

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