# Directly and inversely proportional- equationsPage 1

Slide 1

## Directly and inversely proportional

Use with student whiteboards, or paper

Objective- a mini lesson on writing equations based on definitions that use the words directly and inversely proportional

Slide 2

A is directly proportional to B

A is inveresly proportional to C

Slide 3

A is directly proportional to B

A is directly proportional to C

Slide 4

In the equation

A is inveresly proportional to B

A is inveresly proportional to C

Slide 5

On your whiteboards- practice writing the equations according to the definitions provided.

Slide 6

weight(w) is directly proportional to mass(m) and directly proportional to acceleration due to gravity(g)

#1

Slide 7

Pressure(P) is directly proportional to the Force(F)and inversely proportional to the area(A)

#2

Slide 8

Frequency(f) is inversely proportional to the time(t)

#3

Slide 9

Acceleration(a) is directly proportional to the Force(F) and inversely proportional to the mass(m)

#4

Slide 10

Jis directly proportional to the , X directly proportional to the L and inversely proportional to theN

#5

Slide 11

ANSWERS

Slide 12

weight(w) is directly proportional to mass(m) and directly proportional to acceleration due to gravity(g)

#1

w=mg

Slide 13

Pressure(P) is directly proportional to the Force(F)and inversely proportional to the area(A)

#2

P=F/A

Slide 14

Frequency(f) is inversely proportional to the time(t)

#3

f=1/t

Slide 15

Acceleration(a) is directly proportional to the Force(F) and inversely proportional to the mass(m)

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