How do I graph y = -x squared + 5?

Answer 1

I read that as
y = -x^2 + 5

you should know what y = x^2 looks like

reflect that in the x-axis
now move the new curve up 5 units

take a look here:

http://www.wolframalpha.com/input/?i=plot+y+%3D+-x%5E2+%2B+5

or

make a table of values of around 8 points, plot them and connect with a smooth curve to get a graph that looks like the one in the link I gave you

Answer 2

I made an error when I typed this. The correct equation is y = x^2 - 7.

Answer 3

even simpler .....

follow my suggestion