U5C6 Functions Test Extra Credit

Find the slope of the line that passes through (10, -8) and (1, 12).

• 20/9
• -20/9
• 4/9
• 9/4

Tags

CCSS.8.EE.B.5

Is this a direct variation?  y =2x + 1

• Yes
• No

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Is this a direct variation?

• yes
• no

Tags

CCSS.8.EE.B.5

CCSS.8.EE.B.6

CCSS.8.F.A.3

CCSS.8.F.B.4

CCSS.8.SP.A.3

Compare the rates of change. Which statement is true about functions A and B?

• They have the same rate of change
• A has a greater rate of change than B
• A and B both have negative rates of change
• A has a negative ROC and B has a positive ROC

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

In a direct variation, y=39 when x=3.  Find the value of y when x=2.

• 26
• 3
• 58.5
• 2

A camp charges families a fee of $625 per month for one child and a certain amount more per month for each additional child. Use the graph to write an equation in slope-intercept form to represent the amount a family with x additional children would pay.

• y = 625x + 225
• y = 225x 
• y = 225x + 625
• y =  625

Tags

CCSS.8.EE.B.5

Which equation shows a NON-proportional relationship of x and y?

• y = 5x
• y = -5.6x
• y = x + 3
• y = 1/2x

Tags

CCSS.7.RP.A.2C

Does the equation open or or down? 
Y = -3x² +7x - 2

• up
• down

Tags

CCSS.HSF-IF.C.7A

Determine the slope and y-intercept from the following equation:   2y = 3x + 6

• m: 2/3   b:  (0,3) 
• m: 3/2   b:  (0,3) 
• m:  4  b:  (0,3/2)
• m: 1/5   b:  (0,5) 

If the blue graph is
f(x) = x² 
then the red must be...

• g(x) = x² - 5
• g(x) = x² + 5
• g(x) = (x - 5)²
• g(x) = (x + 5)²

Tags

CCSS.HSA.CED.A.2

CCSS.HSA.REI.D.10

CCSS.HSA.REI.D.11

CCSS.HSF.BF.B.3