Log in

View Full Version : Graphs of straight lines


Desrine
Oct 26, 2008, 03:33 PM
is (-3,2) a solution of y = 2x + 2?

Desrine
Oct 26, 2008, 03:35 PM
is (-3, 2) a solution for y = 2x + 2?

ashley0716
Oct 26, 2008, 06:26 PM
No, plug the numbers in: (-3,2) is (x,y) respectively. So you would plug them in: 2=2(-3)+2? Nope that doesn't work. But if you want coordinates that are solutions to this problem it's simple, plug any number you want in for x, for example: 1. y=2(1)+2 so "y" is equal to 4. So your coordinate (now correct) would be (1,4) hope this helps!