Equations and inequalities

What inequality does the number line graph represent

• x ≤ 4
• x ≥ -4
• x < -4
• x < 4

What inequality does the number line graph represent?

• x ≥ 3
• x > 3
• x < -3
• x ≤ -3

• Open
• closed

Match the graph with its inequality.

• a > 11
• a < 11
• a ≥ 11
• a ≤ 11

When you graph an inequality, use a closed circle with which symbols?

• ≤, ≥ 
• <, >
• ≤, <
• ≥, >

When graphing an inequality, use an open circle with which symbols?

• <, >
• ≤, ≥ 
• ≤, <
• ≥, >

In the equation x + 7 = 12 , what should you do to isolate the variable? 

• Subtract 7 from both sides.

• Add 7 to both sides.

• Multiply both sides by 7.

Which choice describes the step needed to isolate the variable?

• Divide both sides by 11
• Multiply both sides by 11.
• Add 11 to both sides.
• Subtract 11 to both sides.

3c + 5 = 23

• c = 3
• c = 6
• c = 7
• c = 18

-4x+1=21

• x=120
• x=5
• x=30
• x=-5