SOLUTION: An equation and two ordered pairs are given. Show that each pair is a solution of the equation. Then graph the two pairs to determine another solution. 2y + x = 5; (−1, 3),

Algebra ->  Graphs -> SOLUTION: An equation and two ordered pairs are given. Show that each pair is a solution of the equation. Then graph the two pairs to determine another solution. 2y + x = 5; (−1, 3),       Log On


   

Question 446065: An equation and two ordered pairs are given. Show that each pair is a solution of the equation. Then graph the two pairs to determine another solution.
2y + x = 5; (−1, 3), (7, −1)
My answer:
2 * 3 + -1 = 5
2 * -1 + 7 = 5
Now, my question is, how do I graph the two pairs to determine another solution?
Answer by richard1234(7193) About Me  (Show Source):
You can put this solution on YOUR website!
You can graph by taking both ordered pairs, graphing them on a Cartesian plane, and drawing a line through them (since the equation is linear). The domain and range of a linear equation are unrestricted, so to find another ordered pair, you can substitute any value into x (or y) and solve for the other variable.