Writing an Equation Using Two Points Goal: to write an equation of a line, in slope intercept form, that passes through two points.

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Presentation transcript:

Writing an Equation Using Two Points Goal: to write an equation of a line, in slope intercept form, that passes through two points.

What is the equation for the line that passes through the points (3,4) and (5,8)? Steps: 1.Calculate slope. 2.Plug into the slope intercept formula (y=mx+b) 3.Plug in x and y given in the question into the formula. 4.Solve for b 5.Rewrite equation with only slope and y- intercept.

What is the equation for the line that passes through the points (3,4) and (5,8)? 1.Calculate slope. 2. Plug into the slope intercept formula (y=mx+b)

What is the equation for the line that passes through the points (3,4) and (5,8)? 3. Plug in x and y given in the question into the formula. 4. Solve for b

What is the equation for the line that passes through the points (3,4) and (5,8)? 5. Rewrite equation with only slope and y- intercept

What is the equation for the line that passes through the points (4,5) and (8,3)? 1.Calculate slope. 2. Plug into the slope intercept formula (y=mx+b)

What is the equation for the line that passes through the points (4,5) and (8,3)? 3. Plug in x and y given in the question into the formula. 4. Solve for b

What is the equation for the line that passes through the points (4,5) and (8,3)? 5. Rewrite equation with only slope and y- intercept

What is the equation for the line that passes through the points (1,2) and (5,10)?

What is the equation for the line that passes through the points (-4,1) and (8,-3)?

What is the equation for the line that passes through the points (6,-3) and (12,-3)?

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