Two equations and their graphs are given. Find the intersection point(s) of the

Algebra
Tutor: None Selected Time limit: 1 Day

Two equations and their graphs are given. Find the intersection point(s) of the graphs by solving the system.

 
2x + y = −3
x − 3y = −5
(xy) = 
  
Apr 20th, 2015

multiply x- 3y = -5

             x= 3y -5

substituting in the other equation

2x + y = -3

2(3y -5) + y = -3

 6y -10 + y = -3

7y = 7

y=1................................

put this value in   x= 3y -5

                             x= 3- 5

                                 =  -2.......................


ANSWERS ARE x =  -2

                           y = 1

Apr 20th, 2015

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