Apizza 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?

Cost of Pizza for 1 inch radius is $0.5.

The Direct variation between cost of pizza and radius in inches of pizza is

Step-by-step 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 =

Cost of Pizza for 1 inch radius is $0.5.

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

Hence The Direct variation between cost of pizza and radius in inches of pizza is

1.4

2.3

step-by-step explanation:

the formula for the constant of variation is

y= kx

divide each side by x

y/x =kx/x

y/x =k

we know a and y

1.   y/x = k

4/1 =4

check the other values to make sure they are the same

8/2 = 4   12/3 =4   and 16/4 =4  

the constant of variation is 4

2.   y/x = k

3/1 =3

check the other values to make sure they are the same

6/2 = 3   9/3 =3   and 12/4 =3  

the constant of variation is 3

depends on how many days you are talking about

step-by-step explanation: