PPT: Direct and Inverse Proportions | Mathematics (Maths) Class 8 PDF Download

 Page 1


Direct
Proportion
Page 2


Direct
Proportion
What is Direct Proportion?
Direct proportion is a
correlation between
two variables in which
an increase in one
variable results in a
proportionate increase
in the other variable.
Direct Proportion Graph
Page 3


Direct
Proportion
What is Direct Proportion?
Direct proportion is a
correlation between
two variables in which
an increase in one
variable results in a
proportionate increase
in the other variable.
Direct Proportion Graph
Real-life Examples
The more hours worked, the higher the earnings
Purchasing more of a particular item results in a higher cost
Preparing larger quantities of food requires more ingredients
Some simple examples of directly proportional relationships  include: 
Page 4


Direct
Proportion
What is Direct Proportion?
Direct proportion is a
correlation between
two variables in which
an increase in one
variable results in a
proportionate increase
in the other variable.
Direct Proportion Graph
Real-life Examples
The more hours worked, the higher the earnings
Purchasing more of a particular item results in a higher cost
Preparing larger quantities of food requires more ingredients
Some simple examples of directly proportional relationships  include: 
Decide which are in direct proportion…
The amount of paint required
and the size of a wall
The distance travelled and the
amount of time it takes
The time taken to complete a job
when there are more workers
A buffet meal's total cost based
on the number of people 
Page 5


Direct
Proportion
What is Direct Proportion?
Direct proportion is a
correlation between
two variables in which
an increase in one
variable results in a
proportionate increase
in the other variable.
Direct Proportion Graph
Real-life Examples
The more hours worked, the higher the earnings
Purchasing more of a particular item results in a higher cost
Preparing larger quantities of food requires more ingredients
Some simple examples of directly proportional relationships  include: 
Decide which are in direct proportion…
The amount of paint required
and the size of a wall
The distance travelled and the
amount of time it takes
The time taken to complete a job
when there are more workers
A buffet meal's total cost based
on the number of people 
Decide which are in direct proportion…
The amount of paint required
and the size of a wall
The distance travelled and the
amount of time it takes
The time taken to complete a job
when there are more workers
A buffet meal's total cost based
on the number of people