Solving Systems of Equations

What is the value of x, when the two eqautions are:

y=-2x+8 and 2x-y=4

• y=-3

• x=4

• x=3

• y=2

What is the solution to the graph above?

• (2,2)

• (-3,1)

• (0,9)

• (-5,-8)

Solve by substitution:

x=2y-3

3x-7y=-14

• y=-3

• y=7

• y=-12

• y=5

Solve the system.

• (1, 2, -2)

• (1, -3, -2)

• (-1, 3, 2)

• No Solution

Solve the system. 

• (5, -6, 3)

• (2, 3, -1)

• (-4, 2, 5)

• No Solution

Enter the x coordinate of the solution to this system of equations.

HINT: Make sure both equations are in (y=mx+b) form. Then do the shortcut with DESMOS

Mathematical Equivalence

ON

Enter the x coordinate of the solution to this system of equations. HINT: Make sure both equations are in (x + y = #) form. Then do the shortcut.

Mathematical Equivalence

ON

Solve the system.

• (2, -2, 3)

• (2, 1, 4)

• (-2, 2, -3)

• No Solution

Solve the system.

• (3, -2, 4)

• (2, -3, 1)

• (-3, 2, -1)

• Infinitely many solutions