Graphing & Writing Equations of Lines

Graphing & Writing Equations of Lines

Review​

How to graph lines:

​y=mx+b

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Graph the y-intercept.

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Count rise over run to graph the slope. Remember​:

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How to write equations of lines:

y = mx+b​

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Write the y-intercept. (this goes where b is)

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Count rise over run to find the slope. (this goes where m is)

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Multiple Choice

What is the letter that represents slope?

• y

• b

• m

• x

Multiple Choice

Which letter represents the y-intercept?

• y

• m

• x

• b

Multiple Choice

How do you calculate slope using a graph?

• rise over run
• run over rise
• look at the y intercept
• look at the x intercept

Multiple Choice

What is the slope?

• 2/3

• 1/2

Multiple Choice

What is the slope?

• -3/2

• -2/3

Multiple Choice

What is the slope?

• 1

• 1/2

Multiple Choice

What is the slope?

• -2

• -1/2

Multiple Choice

What is the slope?

• -1/2

• -2

Multiple Choice

What number represents the slope ?

y = -2/3x + 2

• -2/3

• 2

• -2

• -2/3x

Multiple Choice

Where do I begin?

Y = -2/5x -4

• At -4 on the X-axis

• At 4 on the y-axis

• At (-2,5)

• At -4 on the y-axis

Multiple Choice

Given that the slope is  2/3 and the y intercept is -3 what is the equation of the line?

• y = 2/3x - 3
• y = 2/3x + 3
• y = -2/3x - 3
• y = -2/3x + 3

Multiple Choice

Which graph represents the equation:

y = 2x + 2

Multiple Choice

Find the equation of the line in slope-intercept form. 

• y = - 1/4x - 3
• y = 1/3x + 3
• y = - 1/4x + 2
• y = 1/3x -3

Multiple Choice

Identify the slope and y intercept in the equation of the line: y = -1/3x + 1

• Slope: 1/3
  y-intercept: 1
• Slope: 1/3
  y-intercept: -1
• Slope: -1/3
  y-intercept: 1
• Slope: -1/3
  y-intercept: 0

Multiple Choice

If m=3 and b=6, what is the correct slope intercept equation?

• y=3-6
• y=3x-6
• y=3x+6
• y=6x+3

Multiple Choice

What is the slope of the line with the equation $$y\ =\ -\frac{3}{2}x\ +\ 4$$  

• $$-\frac{3}{2}$$  

• $$\frac{3}{2}$$  

• $$4$$  

• $$-4$$  

Multiple Choice

What is the y-intercept of the line with the equation $$y\ =\ -2x\ +\ 4$$  

• $$-2$$  

• $$2$$  

• $$4$$  

• $$-4$$  

Multiple Choice

Graph the line with the equation $$y\ =\ -\frac{2}{3}x\ +\ 4$$  

Multiple Choice

Graph the line with the equation $$y\ =\ -\frac{1}{3}x\ -\ 4$$  

Multiple Choice

Which y - intercept and slope applies to the graph?

• y - intercept = 2, slope = 2

• y - intercept = -2, slope = 1/2

• y - intercept = -2, slope = 2

• y - intercept = 1, slope = 2