Hi, I have another problem that has to do with functions.
48. Which data set is best described by the function y = –2x 2 + 5x?
F
G
H
J
Is that $\displaystyle y=-2x^{2}+5x$? You want to use the caret symbol ^ to indicate exponentiation. Or, you can use LaTeX like I just did.
In any case, the way to see which one fits is to start plugging in numbers. Take your x's, in the left-hand columns, plug them into your function, whatever that is, and see if you get the correct y values.