Practice Linear Equations

What is the slope:

y + 2 = -2 (x - 3)

• 6

• -2

• 11

• 2

Tags

CCSS.8.EE.B.5

What is the slope:

8x - 6y = 1

• -2/5

• 4/7

• 4/3

• 3/4

Tags

CCSS.8.EE.B.5

What is this equation as Slope Intercept form:

y - 6 = -1/3 (x - 9)

• y = -1/3x + 8

• y = 1/3x + 8

• y = -1/3x - 8

• y = -1/3 + 8

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is this equation in Slop Intercept form:

y - 2 = -3 (x - 4)

• Answer not shown

• y = -3x - 14

• y = 3x + 14

• y = -3x + 14

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

Determine if the given lines are parallel:

-6x + 8y = -24 and y = 3/4x - 7

• Yes

• No

Tags

CCSS.8.EE.B.6

Determine if the given lines are parallel:

y = -4x -1 and 4x + 2y = 6

• No

• Yes

How would you classify a correlation coefficient of -0.7?

• Strong Positive

• Weak Negative

• Weak Positive

• Strong Negative

Ever since Renata moved to her new house, she's been keeping track of the height of the tree outside her window.

H represents the height of the tree (in centimeters), t years since Renata moved in.

H = 210 + 33t

How fast does the tree grow?

• 33 centimeters per year

• 50 centimeters per year

• 12 centimeters per year

• Answer not shown

Tags

CCSS.HSF.LE.B.5

Suppose y varies directly with x. Write a direct variation equation that relates x and y, then find the value of y when x = 12

y = 28 when x = 3

• y = 40

• y = 84

• y = 23

• y = 68

Find the x- and y-intercepts of the following linear function:

2x - 4y = -8

• Answer not shown

• y = 5 & x = 2

• y = -3 & x = 9

• y = 2 & x = -4