Modeling Functions

An online clothing company sells custom sweatshirts. The company charges $4.99 for shipping plus $6.50 for each sweatshirt. Which Equation describes this situation?

• y = $4.99x +$6.50
• y = $6.50x - $4.99
• y = $6.50x + 4.99
• y = $4.99x - $6.50

A line passes through the origin and has points (5,19) and (6,20) on its line. Write a linear function rule in terms of x and y for this line.

• y = x
• y = 2x +2
• y = x + 20
• y = x +1

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Which linear function has the greater rate of change, the one described by the equation y=0.5x+3 or the one described by the points? (6,2) and (8,5)

• The equation has the greater
• The points have the greater

Tags

CCSS.8.F.A.2

CCSS.HSF.IF.C.9

What is the initial value of the function: y = -4x - 5

• 4
• -5
• 5
• -4

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the rate of change of the linear function shown : 1/3x - 3

• -3
• 3
• 1/3
• 3/1

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Which linear function has initial value of 5? y=5x+4 y=4x+5 y=−4x−5 y=−5x+4

• y=5x+4
• y=4x+5
• y=−4x−5
• y=−5x+4

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Identify the equation of the linear function through the points (−1,−1) and (2,−10). Then state the rate of change of the function.

• -3
• -9
• -11/3
• 3

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2

Find the rate of change of the linear function from the point (0,8) to the point (18,20)

• 12
• 6/9
• 12/18
• 2/3

Tags

CCSS.8.F.B.4

CCSS.HSF.IF.B.6

Which rule represents a linear function? y=−4x        y= 2/x        y=x−1

• All are linear
• Only y = x-1
• y = -4x and y = x-1
• Only y = 2/x

Tags

CCSS.8.F.A.3

What is the initital value for a linear function passing through points (-1,-1) and (2,-10)?

• -4
• 2
• 4
• -2

Tags

CCSS.8.F.B.4

CCSS.HSF.LE.A.2