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Practice 2-5

Bell Work

Lesson 2-5 Notes Today’s Objective

SWBAT define a variable in terms of another variable.

SWBAT model distance-rate-time problems.

Consecutive integers are integers that differ by 1. (Example: 50, 51)

An object in uniform motion is an object that moves at a constant rate of speed. The formula d=rt gives the relationship between distance, rate, and time.

x+2

x x+1 x+2 72

x+1 x + 2

3 3

3 3 3

69

3

3

69

3

23

24 25

23 24 25

180

t-1

2

1

5

1

1

5

1.2

x+50

2

x+50

1. The sum of 3 consecutive integers is 48. Find these integers.

2. The sum of 2 consecutive integers is 89. Find these integers

Hints:1.Define a variable for one of the integers2.Write an expression for the other(s)3.Write and solve an equation to find the integers.

Boat Rate Time Distance

canoe

motorboat

Hint: When they “catch up” their distance will be equal

Person Rate Time Distance

Sarah

John

*Hint-When you add Sarah and John’s distance traveled, it will equal how far apart they are.