Graph - Explain
Find the Slope
Direct Variation
Slope-Intercept Form
Slope & y-intercept
100

y = 2x + 1

Explain how to graph this equation.

Start at origin. Move up 1 on the y-axis. For the slope move up 2 and 1 to the right. 

100
(5, 7) and (3, 6)
What is 1/2?
100
Find k when y = 10 and x = 2.
What is 5?
100
Write an equation in slope-intercept form when slope = 3 and the y-intercept is 2
What is y = 3x + 2?
100

What is the slope and y-intercept?

2x + 4y = 12

slope = -1/2 

y-intercept = 3

200

y = -2/3x - 7

Explain how to graph this equation.

Start at the origin. Move down 7 on the y-axis. For the slope move down 2 and 3 to the right. 

200
(2, 5) and (8, 1)
What is -2/3?
200
y = 4/5 x
What is 4/5?
200
Write in slope-intercept form: slope = 1/4; y-intercept = -6
What is y = 1/4 x - 6?
200

What is the slope and y-intercept?

 -5x + 3y = 15

slope = 5/3

y-intercept = 5


300

y = 6/7x - 5

Explain how to graph this equation.

Start at the origin. Move down 5 on the y-axis. For the slope move up 6 and 7 to the right. 
300
y = -3x - 2
What is -3?
300
Find k. (-3, 9)
What is -3?
300
Identify the slope: y = -5/2 x - 3/4
What is -5/2?
300

What is the slope and y-intercept? 

1/2x - y = 6

slope = 1/2

y-intercept = -6

400

4x + y = 8

Explain how to graph this equation. 

Start at the origin. Move up 8 on the y-axis. For the slope move down 4 and 1 to the right. 

400
4x + y = 7
What is -4?
400
Write a direct variation equation if k = 4.
What is y = 4x?
400
Identify the y-intercept: y = 3/4 - 2
What is -2?
400

What is the slope and y-intercept?

-5x - 2y = -14

slope = -5/2

y-intercept = 7

500

2x + 4y = 12

Explain how to graph this equation.

Start at the origin. Move up 3 on the y-axis. For the slope move down 1 and 2 to the right. 

500
-6x + 3y = 9
What is 2?
500

The value of y varies directly with x and y = 8 when x = 2. Find y when x = 7

What is 28?

500
Write in slope-intercept form: slope = 2; (3, 5)
What is y = 2x -1?
500

What is the slope and y-intercept?

-x - y = -1

slope = -1

y-intercept = 1

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