Solving Equations & Trend Lines

Solve:
7x = 3x + 24

• x = 6

• x = 10

• x = 14

• x = 4

What is the first step you should take to solve this problem?

-3(x - 2) = -8 +9b

• add 8 to both sides

• subtract 9b from both sides

• Distribute to multiply -3 by x and -2.

• add 2 to both sides

Tags

CCSS.7.EE.B.4A

Jacob solved the following equation using the steps shown.

Step 1 5x + 9 = 2x - 3

Step 2 3x + 9 = -3

Step 3 3x = -12

Step 4 x = -4

What operation did he perform to get from Step 1 to Step 2?

• Subtracted 2x from both sides

• Subtracted 9 from both sides

• Multiplied both sides by 3

• Added 3 to both sides

Tags

CCSS.HSA.REI.A.1

Solve for w

5w + 5 = 8w - 10

• -5

• -2

• 2

• 5

12k + 15 = 35 +2k

• k = 2

• k = 4

• k = -2

• k = -4

Solve for x

7x = 4x + 33

• x = 3

• x = 11

• x = 21

• x = 88

Solve for z

3z - 7 = 32

• z = 8

• z = 2

• z = 13

• z = 11

Tags

CCSS.7.EE.B.4A

Which sentence describes the relationship shown on this scatter plot?

• As the temperature decreases, the visitors increase.

• As the temperature increases, the visitors increase.

• As visitors increase, the temperature decreases.

• No association or pattern.

Based on the scatterplot, what is the best prediction of the average number of hours a person spends at work every week, if that person spends an average of 10 hours on recreational activities every week?

• 35 hours

• 95 hours

• 60 hours

• 45 hours

The scatter plot shows the relationship between the number of chapters and the total number of pages for several books.  Use the trend line to predict how many chapters would be in a book with 180 pages. 

• 12 chapters

• 22 chapters

• 15 chapters

• 18 chapters

Tags

CCSS.HSF.BF.A.2