Chapter Review pg. 360-361
8. The graph shows a linear relation.
a) Describe what the graph is about.
- income of the number of cars being washed
b) Describe patterns on the graph.
- it goes over one, up 10
c) What is the cost of one car wash?
- each car is washed for $10
d) Make a table of values from the graph.
e) If 15 cars are washed, what is the income for the Grade 8 class?
- 15 x 10 = $150
a) They are far apart. They go over 2, up 9.
b) Yes, it's linear because it's in a straight line.
c) Yes, because you can have half an hour or a dollar and fifty cents.
b) The y axis goes up by 4
The x axis goes up by 1
c) You times the x axis by 4 then add 1 to the y.
The expression would be 4x + 1