Slope from Intercept Form

When graphing, what do you do after you graph your y-intercept?

• Find slope and move the run(left or right) then move the rise (up or down)

• Find slope and move the rise (up or down) then move the run (left or right)

• Draw a vertical line

• Draw a horizontal line

What is the equation for this graph?

• y= 4/5 x + 4

• y= 5/4 x + 4

• y= 4x -5

• y= 5x + 4

Write the equation of the line.

• y = -1/3x - 2

• y = 1/3x - 2

• y = 3x - 2

• y = -3x - 2

Convert to Slope-Intercept form (solve for y):

• y=-5x+5

• y=-x+5

• y=x+1

• y=-x+1

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

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Which equation is in Slope Intercept Form?

• y=mx+b

• Ax+By=C

• y=⅓x + 10y

• 5x + 10x = 100

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What is the slope intercept form of the equation
4x - 8y = 72

• y = -4x + 72

• y = -4x - 9

• y = 1/2x - 9

• y = 4x + 9

Tags

CCSS.8.EE.B.6

CCSS.8.F.A.3

What needs to be moved first when converting from Slope Intercept to Standard Form, for y=½x +10?
y=mx+b  ---> Ax+By=C

• subtract 10

• add 10

• subtract ½x

• add ½x

What needs to be moved second when converting from Slope Intercept to Standard Form, for y=½x +10?
y=mx+b  ---> Ax+By=C
The first step was to subtract ½x so now it looks like
-½x +y = 10
Now what?

• multiply by -2

• multiply by 2

• +½

• divide by -2

What needs to be moved second when converting from Slope Intercept to Standard Form, for y=½x +10?
y=mx+b  ---> Ax+By=C
The first step was to subtract ½x so now it looks like
-½x +y = 10
Then you multiplied by -2
Now what will it look like?

• -2x -2y=10

• -2x+2y=20

• x-2y=20

• -x+2y=10