Introduction to Linear

Unit 3 Review

Write and Graph Linear Equations

Lesson 3.1 and 3.2: Finding Slope

• Tables

• Graphs

• Two Points

Multiple Select

Slope is...(choose the all the options that are correct)

• $$\frac{\text{rise}}{\text{run}}$$  

• $$\frac{x}{y}$$  

• $$\frac{\Delta y}{\Delta x}$$  

• $$\frac{vertical\ change}{horizontal\ change}$$  

Multiple Choice

What does "m" stand for in the slope formula?

• y axis

• slope

• y coordinate

• x coordinate

Multiple Choice

Find the slope given the points (3,2) and (4,7).

• 4

• 5

• -5

• 1/5

Open Ended

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Lesson 3.3 Slope-Intercept Form

• How to Graph

Multiple Choice

What is the y-intercept in the equation y= -2x + 5

• -2

• 3

• 5

• Cannot be Determined

Multiple Choice

What is the slope in the equation y=2x + 3?

• 2

• 3

• 5

• Cannot be Determined

Multiple Choice

What does 'b" represent in y=mx+b

• y-intercept

• macaroni

• nothing

• slope

Multiple Choice

In the equation y=mx+b, what does the m represent?

• slope

• y-intercept

• linear

• point-slope

Multiple Choice

Vertical or horizontal?
Undefined slope

• vertical
• horizontal
• neither

Multiple Choice

Vertical or horizontal?

No slope

• vertical

• horizontal

• neither

Multiple Choice

Vertical or horizontal?
x = -3

• vertical 
• horizontal
• neither

Multiple Choice

Vertical or horizontal?
x = 4

• vertical 
• horizontal
• neither

Open Ended

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Lesson 3.4 & 3.5

• x and y intercepts

Multiple Choice

The point where the line crosses the x-axis is called the:

• origin

• x-intercept

• y-intercept

Multiple Choice

The point where the line crosses the y-axis is called the:

• origin

• x-intercept

• y-intercept

Multiple Choice

True or false:
The y-intercept of a function ALWAYS occurs where y is equal to zero.

• True
• False

Multiple Choice

True or false:
The x-intercept of a function ALWAYS occurs where y is equal to zero.

• True
• False

Multiple Choice

What is the x and y intercept for the following equation ?
4x - 10y = 20

• x - int = 4    
  y-int = -10
• x-int = 5
  y-int = 2
• x - int = 5
  y int = -2
• x -int = 4
  y -int = -10

Open Ended

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Lesson 3.6

• Writing in Slope Intercept Equations

Multiple Choice

Determine the slope and y-intercept.   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) 

Multiple Choice

What is the equation of this line?

• y = 2x +2

• y = 2x -2

• y = -x + 2

• Cannot be Determined

Open Ended

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Lesson 3.7

• Equations with point and slope

• Equations with two points

Multiple Choice

Answer the question.

• rise

• run

• slope

• height

Multiple Choice

When you have two points, EX. (2, 3) (4, 5), What is first?

• Plug into y=mx+b and Find y-intercept (b)

• Pick a point (x, y)

• Find Slope (m)

• Put m and b into y=mx+b

Multiple Choice

When you have two points, EX. (2, 3) (4, 5), What is next?

• Plug into y=mx+b and Find y-intercept (b)

• Pick a point (x, y)

• Find Slope (m)

• Put m and b into y=mx+b

Multiple Choice

When you have two points, EX. (2, 3) (4, 5), What is the 3rd Step?

• Plug into y=mx+b and Find y-intercept (b)

• Pick a point (x, y)

• Find Slope (m)

• Put m and b into y=mx+b

Multiple Choice

When you have two points, EX. (2, 3) (4, 5), What is the Last Step?

• Plug into y=mx+b and Find y-intercept (b)

• Pick a point (x, y)

• Find Slope (m)

• Put m and b into y=mx+b

Open Ended

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3.12 Scatterplots

• Trend Lines

Multiple Choice

What type of correlation does this graph have?

• Negative

• no association

• positive

Multiple Choice

What type of correlation does this scatterplot display?

• Positive

• Negative

• No Correlation

Multiple Choice

Describe the correlation, if the correlation coefficient is r = -0.26

• Positive, weak

• Negative, weak

• Positive, strong

• Negative, strong

Multiple Choice

Describe the correlation coefficient if

r = 0.90

• Positive, weak

• Positive, strong

• Negative, weak

• Negative, strong

Open Ended

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