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8th Grade Illustrative Mathematics: Grade 8; Unit 4; Lesson 14: Practice Problem 3 (long version)
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This longer version includes a word problem (problem in context; the problem contextualized) to show the graphs of Juan and Annie starting at home and moving apart as they move to the park. I also take a closer look at Annie's position when Juan reaches the park (1.5 hours, 3 miles for Juan).
Furthermore, I think that students should practice switching between the slope-intercept for of an equation (y = mx + b) and the standard form of an equation (Ax + By = C). I added at the end, solving this problem using the standard form of an equation.
Images Used in this video:
PDF of images in video:
Illustrative Mathematics
Unit 4: Linear Equations and Linear Systems
Lesson 14: Solving More Systems
Practice Problem #3
My Website:
Furthermore, I think that students should practice switching between the slope-intercept for of an equation (y = mx + b) and the standard form of an equation (Ax + By = C). I added at the end, solving this problem using the standard form of an equation.
Images Used in this video:
PDF of images in video:
Illustrative Mathematics
Unit 4: Linear Equations and Linear Systems
Lesson 14: Solving More Systems
Practice Problem #3
My Website:
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