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9-12 Extra Support Materials for Algebra 1 Unit 2 Lesson 16

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K-5 Math 6-8 Math •9-12 Math

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Algebra 1 Geometry Algebra 2 •Extra Support Materials for Algebra 1

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Extra Support Materials for Algebra 1

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Lesson 16

16.1 Warm-up 16.2 Activity 16.3 Activity

Unit 2, Lesson 16

Elimination

Extra Support Materials for Algebra 1

16.1

Warm-up

Which three go together? Why do they go together?

A

B

C

D

16.2

Activity

Here are some equations in pairs. For each equation, find the -intercept, -intercept, and slope of a graph of the equation.
1. and
2. and
3. and
4. and
What do you notice about the pairs of equations?
Choose one pair of equations and rewrite them into slope-intercept form (). What do you notice about the equations in this form?

16.3

Activity

For each question,

What number did you multiply the equation by to get the target coefficient?
What is the new equation after the original has been multiplied by that value?

Multiply the equation so that the coefficient of is 9.
Multiply the equation so that the coefficient of is 1.
Multiply the equation so that the coefficient of is -5.
Multiply the equation so that the coefficient of is -8.
Multiply the equation so that the coefficient of is 3.
Multiply the equation so that the coefficient of is 3.

None