Question

Graph the equation f(x)=-5x

Answer 1

Plug in any two values \(x_1\) and \(x_2\) to get \(f(x_1) and f(x_2)\). Then just draw the points \((x_1, f(x_1)) \) and \((x_2, f(x_2)) \) into a cordinate system and make a line that passes through both of them.

Easy as pie. :)

Answer 2

http://www.wolframalpha.com/input/?i=-5x