Direct and Inverse Variation

Does the following equation represent direct

or inverse variation?

 Inverse variation

Direct Variation

y =
16
x

Does the following equation represent direct

or inverse variation?

Inverse Variation

 Direct Variation
y =
-16x

If y varies directly as x and y = 15 when x = 3,

find an equation for direct variation.

y=

If y varies inversely as x and y = 2 when x = 8,

find an equation.

y=

If y varies inversely as x and x = 7 when y = 21,

what is an equation for the situation?

xy = 147

y = 3/x

y = x/147

xy = 3

If y varies directly as x and x = 36 when y = 4,

write an equation of variation.

y =

What type of variation is this?

 

The amount of rocket fuel and the distance

they travel.

Inverse variation

Direct Variation

What type of variation is this?

 

The number of kids in a family and the amount

of extra money in a parent's wallet.

 Inverse Variation

Direct Variation

What type of variation is this?

 

The time a person studies and their GPA.

Direct Variation

Inverse Variation

What type of variation is this?

 

The amount of money needed to do laundry

at college and the amount of times a person

changes their clothes.

 Direct Variation

Inverse Variation

What type of variation is this?

 

The numbers of 100s on "thatquiz.org" and

a persons test grade.

Inverse Variation

 Direct Variation

The volume of a gas varies directly as its

temperature and inversely as its pressure.   What

would be a formula that we could use

for this situation.
 V = kt/p

V = ktp

V = tp/k

V = t/kp

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