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YOURE CERTIFIED!65.3 Writing Linear Equations Given Two
PointsTodays Schedule:Lesson 5.3 PowerpointIn class
assignment/homeworkGoalWrite an equation of a line given two points
on the line.Key WordsSlopeSlope-intercept formPoint-slope form
5.3 Writing Linear Equations Given Two PointsEXAMPLE 1 Use a
graphSolution 1 Find the slope.
(0, 2)(-4, 5)m = y2 y1x2 - x15.3 Writing Linear Equations Given
Two PointsEXAMPLE 1 Use a graphSolution 2 Write the equation of the
line. From the graph you can see the y-intercept is b = 2. Use
slope-intercept form.
y = mx + b
(0, 2)(-4, 5)5.3 Writing Linear Equations Given Two Points
Additional examples: Write the equation of the line in
slope-intercept form.
(0, 3)(4, 5)(2, -3)(1, 2)5.3 Writing Linear Equations Given Two
PointsEXAMPLE 2 Write an Equation of a Line Given Two PointsWrite
in slope-intercept form the equation of the line that passes
through the points (3, -2) and (6, 0). 1 Find the slope.y2 y1x2 -
x1m = 5.3 Writing Linear Equations Given Two PointsEXAMPLE 2 Write
an Equation of a Line Given Two PointsWrite in slope-intercept form
the equation of the line that passes through the points (3, -2) and
(6, 0). 2 Write the equation of the line. Use point-slope form,
because you do not know the y-intercept.
y y1 = m(x x1)5.3 Writing Linear Equations Given Two Points
(3, -2)(6, 0)5.3 Writing Linear Equations Given Two
PointsAdditional examples: Write in slope-intercept form the
equation of the line that passes through the given points.(2, 3)
and (4, 7)(-4, 5) and (2, 2)(1, -1) and (4, -4)
5.3 Writing Linear Equations Given Two PointsYOUR TURNPage 288
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