5.1 to 5.3 Practice

Given direct variation, and y = -15 when x =3, name the constant of variation

• 15

• -5

• 3

• -3

Given y varies directly with x, if y=4 when x=-8, write the equation relating the variables.

• y=2x

• y=-2x-8

Find the slope of the line between the points (-5,10) and (7, 6).

• -3

• -1/3

• 4

• -1/4

Tags

CCSS.8.EE.B.5

Find the slope of the line.

• 1/2
• -1/2
• 2
• -2

Tags

CCSS.8.EE.B.5

Suppose y varies directly. If y=-10 when x=2, use the equation relating the variables to find y when x = -8.

• -20

• 16

• 40

• -36

What is the y-intercept of this graph?

• (0,1)
• (0,-2)
• (0,0)
• (0,3)

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

• slope: 5   y-intercept:  (0,3) 
• slope: 3/2   y-intercept:  (0,3) 
• slope:  4  y-intercept:  (0,3/2)
• slope: 1/5   y-intercept:  (0,5) 

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Identify the slope of the Equation
y=5x+3

• 5
• 3

Tags

CCSS.8.EE.B.5

Identify the y-intercept of the equation
y=2x+5

• 2
• 5

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Which letter in the equation below represents the slope?

y=mx+b

• y

• m

• x

• b

Tags

CCSS.8.EE.B.5