HCPS Pre-Algebra Exam Review Part 3

11. The graph shows the linear relationship between the total sales and the amount of items purchased from the local Dollar Store.

Which equation best represents the relationship shown in the graph?

• $y=2x+1$

• $y=-2x+1$

• $y=-x+\frac{1}{2}$

• $y=x-\frac{1}{2}$

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

12. Haruki has $20 in his savings account. He adds $5 each week to the account. He wants to draw a graph that shows how much money is in his savings account over time, starting with $20.

What is the equation of the line?

• $y=25x$

• $y=20x+5$

• $y=5x+20$

• $y=5x$

Tags

CCSS.8.EE.B.5

13. Carlos bought a new cell phone. The graph represents the relationship between the number of minutes he uses and the total cost.

• 
  

  $y=5x+0.1$
  

• $y=0.1x+5$

• $y=0.5x+5$

• $y=5x+5$

Tags

CCSS.8.EE.B.5

14. The graph shows the earning from a bake sale per item sold. Which equation represents the earnings from the bake sale?

• $y=1x$

• $y=5x$

• $y=10x$

• $y=25x$

Tags

CCSS.8.EE.B.5

15. What is the solution to the equation  $2x-4=6$ ?

•  $x=1$  

•  $x=4$  

•  $x=5$  

•  $x=8$  

Tags

CCSS.7.EE.B.4A

17. Nicholas showed his friend Alma the problem shown from his homework. He told her that his answer was marked wrong but he could not find his mistake. Alma told him that she found his mistake. What was Nicholas' mistake on the problem?

• Alma said that there is a distribution error from step 1 to step 2.

• Alma said that there is an addition error from step 2 to step 3.

• Alma said that there is a subtraction error from step 3 to step 4.

• Alma later decided that Nicholas was correct; there were no errors in the solution to the problem.

Tags

CCSS.HSA.REI.A.1

18. Given the equation $ax+b=9x+21$ , which set of values for a and b would result in an equation with infinitely many solutions?

• a=3, b=7

• a=9, b=9

• a=9, b=-21

• a=9, b=21

Tags

CCSS.8.EE.C.7A

19. How many solutions does the following equation have?  $2x-4=4-2x$  

• No solution

• One solution

• Infinitely many

• Unsolvable

Tags

CCSS.8.EE.C.7A

20. Which of the terms given can you write in the blank box so that the equation will have infinite solutions?

• -4

• -2

• 2

• 4

Tags

CCSS.8.EE.C.7A

25. A table of values for x and y are shown. Select the correct rule for y in terms of x.

• $y=5x$

• $y=x+4$

• $y=2x+3$

• $y=3x+2$

Tags

CCSS.6.EE.C.9