
Comparing Linear Functions 1
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Easy
Standards-aligned
Frances Hale
Used 27+ times
FREE Resource
9 Slides • 2 Questions
1
Comparing Linear Functions 1
2
How to format rate of change
change in inputchange in output
Can keep as a fraction or divide the fraction to get a number
Not written as a ratio
Not written as a point (x, y)
3
Every linear function has:
Rate of change
Initial value (in proportional relationships, this is 0)
y = mx + b
4
Phone Plan
5
Phone Plan
Compare to Phone Plan B:
A flat rate of $75 per month.
When do the two phone plans cost the same?
6
Faucet: filling a tub. What is the rate of gallons per minute?
7
Compare to faucet B:
faucet B:
y=65x
Which faucet fills a 50 gallon tub faster?
8
Compare savings rates
9
Linear functions can be written from...
Graphs
Tables
Written situations
10
Poll
Opinion: With what presentation is it easiest to find the initial value?
Equation
Graph
Table
Word problem
11
Poll
Opinion: With what presentation is it easiest to find the rate of change?
Equation
Graph
Table
Word problem
Comparing Linear Functions 1
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