SOLUTION: i think this is a function... but im not sure... (x-4)(x-4)=10 how do you do this?

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Question 196708: i think this is a function... but im not sure...

(x-4)(x-4)=10
how do you do this?
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
%28x-4%29%28x-4%29+=+10 Perform the indicated multiplication.
x%5E2-8x%2B16+=+10 Now subtract 10 from both sides.
x%5E2-8x%2B6+=+0 Write this equation as a function.
f%28x%29+=+x%5E2-8x%2B6
Ask the question: "For each value of x, do you get a unique value of f(x)?"
The answer here is yes, so it is is a function.
Another way to determine if it is a function is called the "vertical line test".
Graph the function and draw a vertical line through the curve. If the verical line intersects the curve in only one place, then it is a function.
graph%28400%2C400%2C-5%2C10%2C-12%2C5%2Cx%5E2-8x%2B6%29
This is also true, so it is a function.