Alg 1. Review 5 for the Final Exam First Semester.

Which equation is equivalent to:

5x - 1 = 3x + 15

• 4x = 3x + 15

• x = 8

• 8x = 16

• 2x - 1 = 15

• 2x = 15 - 1

James solved the equation following those steps.

What step did James do incorrectly and what was her mistake?

• James made a mistake in Step 3 by subtract 3x from 6x instead of adding it.

• James made a mistake in Step 2.

  She subtracted 2x from 8, but they are not like term

• James made a mistake in Step 4 by dividing instead of subtracting.

• James made a mistake in Step 1 by distributing the division incorrectly.

• There was no mistake.

• 4
• 6
• 10
• 3
• 12
• 8
• 2

Solve the following for y (that is write as y=mx + b or b + mx)

1) 2x + 3y = 12 : ​ (a)  

2) 20x + 5y = 3 :​ (b)  

• y = 4 - (2/3)x
• y = (3/5) - 4x
• y = (5/3) - 4x
• y = 0.25x + 1
• y=(3/5) + 4x

Select ALL the equations with the solution: x=-3

Select ALL that apply.

• 3x - 4 - x = 2

• 7x + 29 = 8

• 10 + 2x = 16

• 5 - 2x = 11

Graph:

2x + y < - 6

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• 
• 
• 

Which of the following points are in the solutions to the 

Inequality.

Select ALL that apply.

• (-2, 3)

• (-2,0)

• (-1,-1)

• (4,-1)

Solve each of the following:

1) -4(x + 3) - 2x + 2 = 8; ​ (a)  

2) 6x - 12 < -36; ​ (b)  

3) 5(x - 2) = 5x - 10; ​ (c)  

• x = -3
• x < -4
• x< -8
• x = 3
• Infinite solution
• no solution
• x = 6
• x = -2

Graph

6x - 4y = -12