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Determine missing coordinates given points

# Determine missing coordinates given points

Unit 10: SLOPE REVISITED

Lesson 3 of 3

Lesson 3 of 3

## Objective: SWBAT determine missing coordinates given points.

## Big Idea: You've found slope before, given two points. But what if I gave you one point and the slope? Could you find the other point?

Subject(s):

Math, Graphing (Algebra), Algebra, modeling, slope (Linear Equations), 8th grade, slopes, geometric figure

*75 minutes*

1

#### Warm Up

*10 min*

Today's Warm Up task consists of a single problem that requires students to interpret a geometric figure in a graph, and, apply their understanding of slope.

It is derived from EngageNY's materials on sample tasks related the 8th grade Common Core standards. I like it because it can be solved using both the methods we learned in previous days, as well as similar triangles. Kids generally stick to the method we use, but 1-2 kids per class can see the similar triangles work, especially when prompted.

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2

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4

#### Homework

*15 min*

Homework 127 is to be completed at home and should take students approximately 15 minutes.

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- UNIT 1: FLUENCIES AND THE LANGUAGE OF ALGEBRA
- UNIT 2: SOLVING LINEAR EQUATIONS
- UNIT 3: INTRODUCTION TO FUNCTIONS
- UNIT 4: INTERPRETING AND COMPARING LINEAR FUNCTIONS
- UNIT 5: SYSTEMS OF LINEAR EQUATIONS
- UNIT 6: EXPONENTS AND SCIENTIFIC NOTATION
- UNIT 7: PARALLEL LINES, TRANSVERSALS, AND TRIANGLES
- UNIT 8: CONGRUENCE AND SIMILARITY THROUGH TRANSFORMATIONS
- UNIT 9: PATTERNS OF ASSOCIATION IN BIVARIATE DATA
- UNIT 10: SLOPE REVISITED
- UNIT 11: VOLUME OF CYLINDERS, CONES, AND SPHERES
- UNIT 12: POLYNOMIALS AND FACTORING
- UNIT 13: QUADRATIC FUNCTIONS

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