Solving and Graphing Equations and Inequalities

If I have 18 dimes and quarters that are worth $2.25, which system would represent this? 

• d + q = 2.25
  .10d + .25q = 18
  

• d + q = 18
  .10d + .25q = 2.25

• 18 d = q
  .10d + .25q = 2.25

• d+ q = 18
  .25d + .10q = 2.25

This system has _____ solutions

• 0

• 1

• 2

• Infinitely many

Which ordered pair is one of the solutions to the system of inequalities?

• (2, 0)

• (1, 1)

• (4, -3)

• (-2, 2)

The owner of Mark's Meat Market orders beef and chicken. He wants to but at least 50 pounds of meat but cannot spend more than $300. Beef is $3 a pound and chicken is $2 a pound.
Which system of inequalities models this situation?

Which is the graph of y=-x+2?

• A

• B

• C

• D

Select the correct graph for each inequality.

• A

• B

• C

• D

Solve for w:
2w + 2b = P

• w = p + 2b

• w = (P- 2b)/2

• w = p/2

• 2w + 2b = P

Solve for y: 2x + 2y > 6

• y > - x + 3

• y < x + 3

• y > 2x +6

• y < - 2x + 6

Which equation is being represented by this line?

• y = -1x + 2

• y = 1/2x + 2

• y = 3x -4

• y = -3x +2

Which of the following equations match the given graph?

• y ≥ 2/5x + 1

• y ≥ -2/5x + 1

• y≤  2/5x + 1

• y ≥ -2/5x - 1