LESSON 4–3 Writing Equations in Point- Slope Form.

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.

___

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