Aim: How can we determine proportionality from an equation, a table or a graph?
Homework: Proportionality Task #2 (click on link below)
Do Now: Fill in the rate table. The relationship is proportional.
The class again investigated proportional relationships and saw the connection between tables, graphs, and equations. The big idea for today's class is:
When graphed, proportional relationships are STRAIGHT LINES THROUGH THE ORIGIN (0,0).
We also noticed that the constant of proportionality in proportional relationships turns out to be the unit rate.
We noticed that relationships, such as y = 3x + 5 cannot be proportional. Only relationships in the y = kx form can be proportional.