Question

A pizza from cheap pizza with a 6 inch radius costs $3.00. write a direct variation equation to represent how much a pizza with a 1 inch radius would cost?

Answer 1

Cost of Pizza for 1 inch radius is $0.5.

The Direct variation between cost of pizza and radius in inches of pizza is
`C= 0.5r`

Explanation:

Given:

Cost of 6 inch pizza = $3.00

We need to find the direct variation equation to represent cost of pizza with a 1 inch radius.

Let Cost f Pizza be represented by 'C'.

Also radius in inches of pizza be represented by 'r'.

First we will find Cost of pizza for 1 inch radius.

Now 6 inch pizza = $3.00

So 1 inch Pizza = Cost of pizza for 1 inch radius.

By Using Unitary method we get;

Cost of pizza for 1 inch radius =
`(3)/(6) = \$0.5`

Cost of Pizza for 1 inch radius is $0.5.

Hence We can say the direct variation would be given as;

`C= 0.5r`

Hence The Direct variation between cost of pizza and radius in inches of pizza is
`C= 0.5r`