SOLUTION: Please help: Find the equation of secant line containing (1, f(1)) and (3, f(3)) for f(x)= {{{-2x^2+3x}}} Thanks

Algebra ->  Graphs -> SOLUTION: Please help: Find the equation of secant line containing (1, f(1)) and (3, f(3)) for f(x)= {{{-2x^2+3x}}} Thanks      Log On


   

Question 690013: Please help: Find the equation of secant line containing (1, f(1)) and (3, f(3)) for f(x)= -2x%5E2%2B3x
Thanks
Answer by jim_thompson5910(35256) About Me  (Show Source):
You can put this solution on YOUR website!
f%28x%29=-2x%5E2%2B3x

f%281%29=-2%281%29%5E2%2B3%281%29

f%281%29+=+1

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f%28x%29=-2x%5E2%2B3x

f%283%29=-2%283%29%5E2%2B3%283%29

f%283%29+=+-9

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So

(1, f(1)) and (3, f(3))

turns into

(1, 1) and (3, -9)

All you need to do is find the equation of the line that goes through the points (1, 1) and (3, -9). I'll let you do this.