### Home > A2C > Chapter 2 > Lesson 2.1.2 > Problem 2-27

2-27.

Solve each of the following systems of equations algebraically. Then confirm your solutions by graphing. Homework Help ✎

*y*= 4*x*+ 5

*y*= −2*x*− 132

*x*+*y*= 9

*y*= −*x*+ 4

Substitute 4*x* + 5 for *y*.

4*x* + 5 = −2*x* − 13

See part (a).

Solve for *x*.

*x* = −3

Substitute −3 for *x*.

*y* = −12 + 5

Solve for *y*.

*y* = −7

(−3, −7)