SOLUTION: Hi, I'm not understanding the function one to one. F(x)=8x+2 is and f(x)= x^2+5 is not, but why? Thank you!

Algebra ->  Test -> SOLUTION: Hi, I'm not understanding the function one to one. F(x)=8x+2 is and f(x)= x^2+5 is not, but why? Thank you!      Log On


   

Question 672602: Hi, I'm not understanding the function one to one. F(x)=8x+2 is and f(x)= x^2+5 is not, but why? Thank you!
Answer by ReadingBoosters(3246) About Me  (Show Source):
You can put this solution on YOUR website!
One to one means one y value for one x value.
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In the case of f(x)=8x+2, if x is 1, y is 10.
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In the case of f(x) = x%5E2+ 5, if y is 30, x could be -5 or 5.
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