Is (1,-1) a solution of 4x+5y=-1

Answer 1

Is (1,-1) a solution of 4x+5y=-1

This question is a simple yes or no. Does the given x,y coordinates solve the equation.

There are 2 ways to solve this problem.

1. Graph and plot the point and see if appears on the line.
2. Plug the x,y values into the equation and see if it resolves the equation...this is faster than step 1..

4 (1) + 5(-1) = -1

4 - 5 = -1.....correct -1 = -1 so YES....That point is a solution.