Solve System of Equations by Elimination and Graphing

Solve by using elimination method.

• (3, 1)

• ( 5, -5)

• (2, 5)

• (15, 1)

For equations below, which method is easier to use? Why?

• Graphing, because both are already in y = mx + b form.

• Substitution, because one equation is already solved for y. 

• Elimination, because both are already in ax + by = c form. 

• None. 

To find a solution by graphing is to find the point where two lines intersect.

• True

• False

For equations below, which method is easier to use? Why?

• Graphing, because both are already in y = mx + b form. Also, substitution, because one equation is already solved for y. 

• Elimination, because both are already in ax + by = c form. 

• Elimination, because both are already in ax + by = c form. Also, graphing, because both are already in y = mx + b form. 

• None.

Solve the system by elimination OR graphing.
−4x − 4y = 0
4x + 4y = 0 

• (−6, −4) 

• Infinite number of solutions  

• (−6, 10) 

• (6, 4) 

Solve by elimination 
5x+6y= -10
3x-2y= -6

• (-2,0)

• (0,-2)

• (2,0)

• (0,2)

Solve for x and y
3x + 2y = 16
7x + y = 19

• (-2,5)

• (-2,-5)

• (2,-5)

• (2,5)

Solve the system by elimination.

• (4,-2)

• (4,2)

• (2,4)

• (2,-4)

Solve the system given:
3x - y = 7
2x + y = 3

• (-1,2)

• (5,4)

• (4,5)

• (2,-1)

What is the solution to this system?

• (1, -1)

• (-1, 1)

• (0, -2)

• (2, 0)