Unit 3 Test 2 Review

When you graph an inequality, you use a solid line for which symbols?

• ≤, ≥

• <, >

What is the y-intercept of the inequality?

• −20
• −4
• 5
• 10

Tags

CCSS.HSA.REI.D.12

Consider the function y<2x+3. Which is true?

• The line would be solid with shading above.
• The line would be dashed with shading above.
• The line would be solid with shading below.
• None of these.

Tags

CCSS.HSA.REI.D.12

Which of the following inequalities matches the graph?

• y < -4x - 1
• y > -4x - 1
• y ≤ -4x - 1
• y ≥ -4x - 1

Tags

CCSS.HSA.REI.D.12

The solution to a system of inequalities is where:

• One inequality has shading

• The two shaded areas overlap

• No values are shaded

• Both lines are dashed

Which of the following is not a solution to this system of inequalities?

• (0,-1)

• (0,3)

• (4,0)

• (6,-2)

Which system of inequalities matches the graph?

• y > 2x - 4

  y < 2

• y < 2x - 4

  y < 2

• y > 2x - 4

  y < 2

• y < 2x - 4

  y < -2

Solve the system of inequalities by graphing.

• 
• 
• 
• 

Tags

CCSS.HSA.REI.D.12

Fuel X costs $2 per gallon and Fuel Y costs $3 per gallon. You have at most $18 to spend on fuel. Your tank can hold up to 14 gallons.

Write a system to represent this situation.

• x+y≤14

  2x+3y≤18

• 2x+3y≤14

  x+y≤18

• 2x+y<18

  x+3y<14

• x+14≤y

  2x+3y≤18

Aleris is sending a fancy organic fruit basket to her grandma for her birthday. Apples cost $3 and oranges cost $2. Aleris can spend no more than $24 on the gift. She wants the basket to include at least 5 apples.

Which two inequalities fit this situation?

Let x = # of apples

Let y = # of oranges

• 3x + 2y < 24

• x > 5

• 3x + 2y ≤ 24

• x ≥ 5