### Home > A2C > Chapter 7 > Lesson 7.3.4 > Problem 7-202

7-202.

Represent each system of equations below with matrices. You do not have to solve the systems. Homework Help ✎

*p*+ 2*q*= 7

3*p*+ 4*q*= 114

*m*− 5*n*= −2

−3*m*+ 4*n*= 94

*x − y*+*z*= −5

2*x*+ 2*y*+ 3z = 10

5*x*− 2*y*+ 6z = 17

*w*− 3*x*+ 2*z*= 41

−2*w*+*x − z =*−13

4*w*+*y*− 2*z*= 12

2 − 3*x*= 1

See part (a).

See parts (a) and (c); rearranging the equations so the variables are in the same order helps.

Notice that there are four variables in total;filling in 0's for the missing variables is also helpful.