Use the elimination method to solve the system of equations.
x + y = 7 2x + y = 11
x + y = 7
2x + y = 11  x = 4 {subtracted the two equations, eliminating the y} x = 4 {divided each side by 1} x + y = 7 {top original equation} 4 + y = 7 {substituted 4, in for x, into top original equation} y = 3 {subtracted 4 from each side} x = 4 and y = 3 (4,3) is the solution to the system of equation. This means the coordinates (4,3) are where the two lines intersect, when graphed, as shown below.
 Algebra House
Comments are closed.

Algebra Examples Playlist
Examples
All
