Unit 2D Test Review

x + y = 4

2x - 5y = 15

• (-5, -1)

• (5, -1)

• (1, 5)

• (-1, 5)

y = -2x + 3

8x + 4y = 12

• $\infty$

• no solution

6x + 2y = -26

x - 6y = 21

• (-3, 4)

• (-4, 3)

• (-3, -4)

• (3, 4)

x + 2y = -14

x - y = 13

• (4, -9)

• (4, 9)

• (9, 4)

• (-9, 4)

7x = 3y + 45

4x + 5y = 19

• (6, 1)

• (-6, 1)

• (6, -1)

• (-6, -1)

Erin bought 4 jars of jelly and 6 jars of peanut butter for $19.32. Adam bought 3 jars of jelly and 5 jars of peanut butter for $15.67. Find the cost of a jar of peanut butter.

• $15.67

• $2.36

• -$2.36

• $19.32

Which graph represents the solution to the inequality        2x - y  $\ge$  -3

• 
• 
• 
• 

 $y\ \le\ 2x\ +\ 1$  
 $2x\ -\ 5y\ \le\ 10$  

Which graph represents the solution to the following system of inequalities?

• 
• 
• 
• 

In order to save money for prom this weekend, Tom is going to walk his neighbor’s dog for $6 per

hour and wash cars for $7.50 per hour. His mother told him he can work no more than 15 hours in

order to keep up with his homework. If Tom would like to make at least $75 to cover prom expenses,

help him determine combinations of hours he can work between these two jobs.

• 
  

  $x\ +\ y\ \le\ 15$ $6x\ +\ 7.5y\ \ge\ -75$
  

• $x\ +\ y\ \ge\ 15$ $6x\ +\ 7.5y\ \ge\ 75$

• $x\ +\ y\ \le\ 15$ $6x\ +\ 7.5y\ \ge\ 75$

Karen and Holly took their families out to the movie theater. Karen bought three boxes of candy and

two small bags of popcorn and paid $18.35. Holly bought four boxes of candy and three small bags

of popcorn and paid $26.05. Find the cost for a box of candy.

• $18.35

• $4.75

• $2.95