Post on 18-Jan-2016
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LESSON 4–3
Writing Equations in Point-Slope 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
5-Minute Check 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
A. y = –2x + 4
B. y = 2x + 4
C. y = 2x – 4
D. y = 4x – 2
Identify the equation for the line that has an x-intercept of –2 and a y-intercept of 4.
Over Lesson 4–2
Which is an equation of the graph shown?
A.
B.
C. y = –2x + 3
D. y = 2x + 3
Targeted TEKSA.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 ProcessesA.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.
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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 Point-Slope Form