5
QuizMultiple Choice
Rewriting Equations to Use Substitution
Question 5 • (AG Q3) Math 8: 25-26 (JTurner)
Jon has to choose which variable to solve for in order to be able to do the problem below in the most efficient manner. Which variable should he choose so that he can use substitution to solve the system?
Answer
A
Jon should solve for y in the first equation because the coefficients can be reduced by a common factor to eliminate the coefficient for y.B
Jon should solve for x in the first equation because the coefficients can be reduced by a common factor to eliminate the coefficient for x.C
Jon should solve for y in the second equation because the coefficients can be reduced by a common factor to eliminate the coefficient for y.D
Jon should solve for x in the second equation because the coefficients can be reduced by a common factor to eliminate the coefficient for x.