Question

Graph the equation by completing the table and plotting the points. You may use Excel or another web-based graphing utility. a) y = 3x - x2 Use the values of x provided in the table to find the y values. Show your work.

Answer 1

I think you mean
y = 3*x-x^2

Answer 2

then try
http://www.algebrahelp.com/calculators/function/graphing/

Answer 3

putting
3*x-x^2
in the box