Unit 4 Linear Equations and Inequalities Make Up Test

4 = 2(x + 3)

• 1/2
• 7/2
• -1
• 5

Tags

CCSS.7.EE.B.4A

What is the first step to solve this equation:
11 - 3x = 44

• Add 3 to both sides
• Subtract 11 from both sides
• Add 11 to both sides
• Divide 3 on both sides.

Tags

CCSS.7.EE.B.4A

x + 9 = 18 + -2x

• 5
• 2
• 3
• 4

Find the Error
What error did the student make when solving the equation:
⅕x + 6 = ⅗x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator
• The student did not multiply all terms by the common denominator
• The student did not use opposite operations appropriately
• The student did not correctly eliminate the variable from one side of the equation

Solve for x.

3x-2 (x+6)= 4x +2

• x= -14

• x= -14/3

• x= 13

Tags

CCSS.HSA-REI.B.4B

Which inequality represents the given graph below?

• $x<-2$

• $x>-2$

• $x\le-2$

• $x\ge-2$

Tags

CCSS.6.EE.B.8

Which of the following is the solution set of the inequality

 $-10+3x<2?$  

•  $x>4$  

•  $x<-4$  

•  $x<4$  

•  $x>-4$  

Tags

CCSS.7.EE.B.4B

-3 < x + 6 ≤ 5

• -9< x  or   x≤ -1
• All Real numbers
• -9< x   and   x≤ -1
• -10< x   and   x≤ -7

Write an inequality for Graph 3.

• x ≤ -2 AND x > 5
• x ≤ -2 OR x > 5
• x ≥ -2 OR x < 5
• -2 ≤ x < 5

Find the Error
What error did the student make when solving the equation:
⅕x + 6 = ⅗x + 5
1x + 6 = 3x + 5
-2x + 6 = 5
-2x = -1
x = 1/2

• The student found an incorrect common denominator
• The student did not multiply all terms by the common denominator
• The student did not use opposite operations appropriately
• The student did not correctly eliminate the variable from one side of the equation