Intermediate Algebra – Student Workbook – Second Edition 2013

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$Lesson 2a – Assessment - Scottsdale Community College - Math Blog$

Lesson 1b – Linear Equations Mini-Lesson Problem 12 WORKED EXAMPLE – WRITING EQUATIONS OF LINES Write an equation of the line to satisfy each set of conditions. a) A line that contains the points (-3, 5) and (0, 1) Slope: Use the ordered pairs (-3, 5) and (0, 1) to compute slope. m = 1 5 4 0 ( 3) 3 y-intercept: Given y-intercept in the ordered pair (0, 1) that was provided then b = 1. Equation: Plug m and b into y = mx + b 4 m , b 1 3 4 y x 1 3 b) Line contains points (-4, -3) and (2, 6) Slope: Use the ordered pairs (-4, -3) and (2, 6) to compute slope. 6 ( 3) m 2 ( 4) 6 3 2 4 9 6 3 2 y-intercept: Not given y-intercept. Pick one given ordered pair and plug m and that ordered pair into y = mx+b. Solve for b. Using (2, 6) 3 6 (2) b 2 6 3 b 3 b Equation: Plug m and b into y = mx + b 3 m , b 3 2 3 y x 3 2 Scottsdale Community College Page 38 Intermediate Algebra
Lesson 1b – Linear Equations Mini-Lesson c) Line has the following graph: Slope: Identify two ordered pairs from the graph and use them to determine the slope. (5, 0) and (3, -1) m = 1 (0) 1 3 (5) 2 1 2 y-intercept: Read the y-intercept from the graph. Ordered pair is (0, -3). Therefore b = - 3. Equation: Plug m and b into y = mx + b 1 m , b 3 2 1 y x 3 2 Scottsdale Community College Page 39 Intermediate Algebra
Page 1 and 2: Scottsdale Community College Interm
Page 3 and 4: Table of Contents Lesson 1a - Intro
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Appendix A: You Try Answers Lesson
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Intermediate Algebra – Student Workbook – Second Edition 2013

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