Quiz 1 Review Q3

Which of the following is a solution to the system of equations shown?

• x=7 and y=15

• x=11 and y=7

• x=21 and y=8

• x=15 and y=11

The lines y=0.5x + 8 and y=5-x are shown graphed. Which of the following is the solution to the system comprised of these two lines?

• (0,5)

• (-2,7)

• (2,3)

• (4,10)

A solution to the equation 4x+2y=20 must also be a solution to which of the following equations?

• 8x+2y=40

• 2x+2y=10

• 2x+y=10

• 4x+4y=40

Which of the following is the solution for b in the system of equations shown?

• 25

• 36

• 42

• 51

Is the point (5,8) a solution to the system of equations shown?

The linear equation

 $y=-\frac{1}{2}x+4$  is shown graphed. If it was combined with the equation $y=-\frac{3}{4}x-4$  to form a system, what would be the solution to this system? 

The value x=5 is a solution to the system of equations shown, where b is some unknown constant. Determine the value of b.

Algebraically solve the following system of equations.

Is the point (2,5) a solution to the system?

Solve using substitution:

• (3,5)

• (8,-2)

• (3,11)

• (-5,7)