How would I find the a for the equation y= a(x-h)^2+k. I'm looking at a graph, and I can solve for everything except for a. What is it supposed to be?

4 answers

If you can see the vertex, fill in those values
e.g. if the vertex is (5,7)
your equation would be
y = a(x-5)^2 + 7

Now see if you can find another point given on your curve, and sub that point in for the x and y, leaving a as the unknown that you can solve for.
Thank you.
If you have a equation how do you transfer that into a table?
without using a graphing calculator?
how do you make a table out of an equation??
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