Lesson 88 Warm Up Pg. 585. Course 3 Lesson 88 Review of Proportional and Non- Proportional Relationships.

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Presentation transcript:

Lesson 88 Warm Up Pg. 585

Course 3 Lesson 88 Review of Proportional and Non- Proportional Relationships

Three important ideas about proportional relationships. 1. Proportional relationships involve two variables – such as the distance traveled and the time spent traveling. As one variable increases, the other increases by a constant factor k: y = kx. 2. In a table of values for the two variables, all pairs form equal ratios. The constant of proportionality can be found by k = y/x. 3. The graph is linear and aligns with the origin.

Example 1

Example 2

Example 3

Example 4 The typical form of a proportional equation is y = kx.

Example 5

Lesson 88 Homework Pg. 589 Practice, #1-10