Equations & Inequalities!

Justin works a writer and earns $20 an hour. Which equation represents the relationship between x, the number of hours Justin works and y, the money he earns?

• x = y + 20

• y = 20x

• $y\ =\ \frac{x}{20}$

• x = 40y

Tags

CCSS.6.EE.C.9

The graph shows the amount of money Jenni has in her savings account as she adds money to it each week. Which is the dependent quantity?

• The amount the account increases each week

• The number of weeks Jenni has added money to the account

• The total amount in the savings account

• The amount in the account when she started adding to it weekly

Tags

CCSS.6.EE.C.9

Which situation CANNOT be represented by the equation x + 10 = 45?

• Rigby spent $45 on a hat and a shirt. The hat cost $10. What is the cost of the shirt?

• Jasmin rode her bike 45 miles last week. She rode 10 miles on Tuesday and the rest of the miles on Wednesday. What is x, the number of miles Jasmin rode her bike on Wednesday?

• Two players scored a total of 45 points in a game. One player scored 10 points. What is x, the number of points scored by the other player?

• There are 45 students in a group. There are also 10 adults in the group. What is x, the total number of students and adults in the group?

Tags

CCSS.HSA.CED.A.3

Gabby is selling books for $12 each. She wants to make more than $180 in book sales. The inequality 12b > 180 can be used to determine the number of books, b, she must sell in order to meet her goal. Which number line best represents the solution to the inequality?

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Tags

CCSS.6.EE.B.8

When graphing an inequality we use a closed circle for which symbols?

• < and >

• $\le\ and\ \ge$

Tags

CCSS.6.EE.B.8

Which graph matches the inequality:

 $x\ <\ 7$  

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Tags

CCSS.6.EE.B.8

4h < 8

• h < 32

• h < 2

• h < 4

• h > 2

Tags

CCSS.6.EE.B.8

Solve the inequality:

x + 7 < 9

• x < 2

• x < 16

• x > 2

• x > 16

Tags

CCSS.7.EE.B.4B

What inequality does the number line graph represent?

• $x\ \le\ 3$
  

• x > 3

• x < 3

• x≥ 3

Tags

CCSS.6.EE.B.8

Natalie has read 170 pages of her book so far. She plans to read an additional 28 pages per day moving forward. She represents the total number of pages, p, that she reads in d days as an equation, table and graph as shown below. Which representation is NOT correct?

• The equation is not correct.

  The equation should be d = 28p + 170

• The equation is not correct.

  The equation should be 170 = 28d + p

• The table is not correct.

  The table should start with zero pages read on day 0.

• The graph is not correct.

  The dependent variable should be represented on the y-axis

Tags

CCSS.HSA.CED.A.3