Practice Solving Equations With Given Variables

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

• (-2,0)

• (0,-2)

• (2,0)

• (0,2)

What is the solution to this system?
y = 2x + 1
y = 4x - 1

• (1,3)

• (-1,-3)

• (-1,3)

• (3,1)

y = 7x + 9

2y + 2x = -14

• (5, 0)

• (9, 18)

• (-2, -5)

• (1, 16)

Solve -4 = 5x + 6

Mathematical Equivalence

ON

Solve the following equations by substitution:
y=-x
y= -2x-1

• infinite solutions

• (-1, 1)

• (1, -1)

• (-1,-1)

Solve the following system by substitution:
y= 2x-4
2y+6= 6x

• (-1, -6)

• (1, -2)

• (-1,-4)

• (-4, -12)

Solve the system by elimination:
7x+y=6
10x+y=12

• (1,-1)

• (2,8)

• (2, -8)

• (1, 15)

Solve: Use Substitution

8x + 4y = 12

y = -2x + 3

• (0,3)

• (3,0)

• No solution(parallel lines)

• Infinitely many solutions

 4x + 8y = 20
-4x + 2y = -30

• (-7,1)

• (2,-5)

• (-2,5)

• (7,-1)

-4x - 6y = 6
4x + 6y = -4

• no solution

• (2,0)

• (-4,0)

• (0,0)