Starter

• Find the slope and y -intercept

• 1.) y = 3x -22.)Find slope & y-int

1.) y = 3x -2

•Slope is 3

•y-intercept is -2

2.)Find slope & y-int

Y-intercept is 2

Slope is 2

Write an equation of the line•1.) If the slope is 5 and the y-intercept is 3

•y = 5x + 3•2.) If the slope is -2 and the y-intercept is 2.

•y = -2x + 2

Today’s Objective

•To be able to write an equation of a line in the slope intercept form.

Write an equation of the line•1.) If the slope is 1/3 and the y-intercept is -2.

•y = 1/3x -2•2.) If the slope is -3/4 and the y-intercept is 6.

•y = -3/4x + 6

You try these, Write an equation of the line

•1.) If the slope is -3 and the y-intercept is 2.

•2.) If the slope is 1/2 and the y-intercept is 0.

•3.) If the slope is -1 and the y-intercept is 3/4.

Write an equation of the line•1.) If the slope is -3 and the y-intercept is 2.

•y = -3x + 2•2.) If the slope is 1/2 and the y-intercept is 0.

•y = 1/2x

Write an equation of the line•3.) If the slope is -1 and the y-intercept is 3/4.

•y = -x + 3/4

Write an equation of the line by finding the slope and y-intercept

y-intercept = 4Slope is up 2 left 2 =

-1

y = -x + 4

Write an equation of the line by finding the slope and y-intercept

y-intercept = -3

Slope is up 3 right

= 3

y = 3x - 3

You try this one, Write an equation of the line

y-intercept = 2

Slope is up 3 left 1 = -3

y = -3x +2

You try this one, Write an equation of the line

Slope is up 1 right 5 = 1/5

y = 1/5x +1

y-intercept = 1

Write an equation of the line by finding the slope and y-intercept

y-intercept = 2

Slope = 0 y = 0x + 2y = 2

Write an equation of the line by finding the slope and y-intercept

Slope is undefined

x = 3

Write an equations of these three lines.

y = 1/2x - 3

y = 1/2x + 0

y = 1/2x +2

Go to point-slope 5-6

Homefun

•Homework page 310p. 25-36