QC: Linear Inequalities

Which point below is NOT part of the solution set?

• (0, 0)
• (-10, -10)
• (-1, 5)
• (5, 20)

How can I tell if the graph of an inequality will have a solid line?

• It has just an equal sign.
• The symbol is greater than.
• The symbol has "or equal to."
• You just guess.

Select the graph for y ≥ -3.

• A
• B
• C
• D

Select the graph for 5x+ y ≤  -1 .

• A
• B
• C
• D

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

Write the linear inequality in standard form for this situation: In order to raise money to attend upcoming competitions, the Math Pentathalon team is selling apple cider and hot chocolate. They hope to make at least $240 by selling hot chocolate for $1 a glass and hot apple cider for $2 a glass.

• x + 2y < 240
• x + 2y > 240
• x + 2y ≤ 240
• x + 2y ≥ 240

• y < -3/4x - 2 
• y > -3/4x - 2 
• y ≤ -3/4x - 2 
• y ≥ -3/4x - 2 

What inequality symbol goes with is at least?

• <
• >
• ≤
• ≥