Download PowerPoint

LESSON 4–3
Writing Equations in PointSlope Form
Over Lesson 4–2
Write an equation of the line that passes through
the given point and has the given slope.
(5, –7), m = 3
Over Lesson 4–2
Write an equation of the line that passes through
the given point and has the given slope.
(1, 5),
Over Lesson 4–2
Which equation is the line that passes through the
points (6, –3) and (12, –3)?
Over Lesson 4–2
Which equation is the line that passes through the
points (9, –4) and (3, –6)?
Over Lesson 4–2
Identify the equation for the line that has an
x-intercept of –2 and a y-intercept of 4.
A. y = –2x + 4
B. y = 2x + 4
C. y = 2x – 4
D. y = 4x – 2
Over Lesson 4–2
Which is an equation of the
graph shown?
A.
B.
C. y = –2x + 3
D. y = 2x + 3
Targeted TEKS
A.2(B) Write linear equations in two variables in
various forms, including y = mx + b, Ax + By = C,
and y - y1 =m(x - x1), given one point and the slope
and given two points.
A.2(C) Write linear equations in two variables given
a table of values, a graph, and a verbal description.
Also addresses A.3(A).
Mathematical Processes
A.1(B), A.1(F)
• point-slope form
Write and Graph an Equation in Point-Slope Form
Write an equation in point-slope form for the line
that passes through (–2, 0) with slope
Write and Graph an Equation in Point-Slope Form
Graph the equation
Write the point-slope form of an
equation for a line that passes
through (4, –3) with a slope of –2.
Find an Equation of a Line
Find an Equation of a Line
Write y – 3 = 2(x + 4) in standard form.
Write 3x + 2y = 6 in slope-intercept form.
Point-Slope Form and Standard Form
A. GEOMETRY The figure shows trapezoid ABCD
with bases AB and CD.
Write an equation in___
point-slope form for the line
containing the side BC.
Point-Slope Form and Standard Form
B. Write an equation in standard form for the same
line.
A. The figure shows right triangle
ABC. Write the point-slope form of
the line containing the
hypotenuse AB.
B. The figure shows right triangle
ABC. Write the equation in standard
form of the line containing the
hypotenuse.
LESSON 4–3
Writing Equations in PointSlope Form