Question 2(multiple choice worth 1 points) (06.01) solve 2x + 5y = −13 3x − 4y = −8 (4, 1) (−4, 1) (4, −1) (−4, −1)

ANSWER

The solution is


EXPLANATION

The given equations are:



and



We multiply equation 1 by 3 to get,



We multiply equation 2 also by 2 to get,



We subtract equation 4 from equation 3 to get,


This implies that,



We put this value of y into any of the equations say equation 2


Simplify


Group like terms

Simplify,



Divide both sides by 3 to get,



Therefore the solution is


The correct answer is option D.

M< 5 = 80 , < 2 = 80, < 6= 100, < 3= 100, < 7= 80, < 4= 80, < 8= 100