4.2 & 4.3 Review

(LT 4.2) Solve the following system using substitution:

       x+3y=8

      y=-2x+10

• (5, 22)

• (1, -3)

• (-1, 3)

• (-3,1)

• (3, -1)

(LT 4.2) Solve the system of equations.

2x-8y=2

6x-8y= -3

• (-5,-9)

 (LT 4.2)  Solve the system of equations.

     2x=-y+4

  x-2y=12

• (-4,-4)

• (4, -4)

• (-4, 4)

• (4, 4)

 (LT 4.3) Solve the system using elimination:

3x + y = 6

4x + y = 8

• (-2, 0)

• (2, 0)

• No Solution

• (0, 2)

 (LT 4.3) Solve the system using elimination:

        - x+6y = 13

        4x + 6y = -54

(LT 4.3) Solve the system of equations using elimination:

3x - y = 22

2x + y =16

 (LT 4.3) Solve the system of equations using the elimination method.  

 4x - 6y = 12

-8x + 8y = 16

• (12, 10)

• (-12, -10)

• (-10, -12)

• (10, 12)

In a basketball game, a regular basket was worth 2 points and a long-distance basket was worth 3 points. If there were 55 baskets in a game and 122 points total, how many regular baskets r and long-distance baskets l were made?

Answer explanation

There were 43 regular baskets made and 12 long-distance baskets made during the basketball game.

Music Club A has a $60 membership fee and charges $4 per CD. Music Club B has a $55 membership fee and charges $5 per CD. How many CD’s is it when they cost the same?

Answer explanation

At 5 CDs the music clubs will cost the same.