Point-Slope Form

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Point-Slope Form
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What we Know so far.
Slope Intercept Form
Where m is the slope and b is the intercept
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What we Know so far.
Slope
Where two points are given as (x1,y1) and (x2,y2)
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Where did this formula come from?
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The New Stuff Write equations
Slope-intercept form is
Where m is the slope and b is the y-intercept
Example Find the equation of the line with
slope -2 and y-intercept 8
y -2x 8
Easy if I know the y-intercept but if I dont?
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The New Stuff Point- Slope Form
Point- Slope form is
Where m is the slope and (x1,y1) is the given
point that the line goes through
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The New Stuff Point- Slope Form
Point- Slope form is
Where does this equation come from?
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Using Point-Slope Form to graph
Slope is
Point is (2,3)
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Manipulate Point-Slope Form to Slope-Intercept
form
Simplify
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Using Point-Slope Form to graph
Slope is
Point is (4,-3)
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Manipulate Point-Slope Form to Slope-Intercept
form
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Your turn
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Homework Pg. 304 2 to 8 even Write slope and
point Plot graph Write equation in slope
intercept form