22
QuizMultiple Choice
Adding and Subtracting Matrices — Cumulative exam
Question 22 • NC-Math 4 CR
Which statement correctly explains how Dana can solve the following system of linear equations for x using the elimination method?
Answer
A
Add the two equations, solve for y, and then substitute –1 for y to find x.B
Multiply the bottom equation by –4, solve for y, and then substitute –1 for y to find x.C
Multiply the bottom equation by –1, subtract the two equations, solve for y, and then substitute 1 for y to find x.D
Multiply the two equations, solve for y, and then substitute 1 for y to find x.