Math question help and formula explanation.?

Posted on 2015-11-20 05:57:00 in Math by AARON

So my math questions that I need help with are:

Evaluate the function for the given values of x (You will have 2 answers for each):

1) f(x) = 2x(to the second power) - 3
^x= -2 and x= 2

2) f(x) = 3(x to the second power + 1)
^x = -2 and x = 7

my other question was for this problem:

Two points on a best fit line for a set of data (3.4, 10) and (4.4, 8). Find the equation of the line of best fit. I tried a method that I saw online and the equation I ended up with was:

y = 0.7(x-8) + 4.4

Is this right? If so, where did I go wrong, and what is the correct formula and answer?

Thank you for helping me!

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