If y varies inversely with x, and the constant of variation is 4.5, what are the values missing in the table?

A. 0.5

B. 4.5

C. 1.5

D. 0.5

Step-by-step explanation:

y varies inversely with x can be written as:

y = k/x

where k is constant of variation.

1. value of A

x=A, y = 9 and k = 4.5 (given)

y = k/x

9 = 4.5/A

=> A = 4.5/9

=> A=0.5

2. Value of B

x =1, y= B, k = 4.5

y = k/x

B = 4.5/1

B= 4.5

3. Value of C

x=C, y=3. k=4.5

y = k/x

3 = 4.5/C

3C = 4.5

C = 4.5/3

C = 1.5

4. Value of D

x= 9, y=D, k=4.5

y = k/x

D = 4.5/9

D = 0.5

Step-by-step explanation:

The form an the equation of inverse variation is:

Being "k" the constant of variation.

Since we know "k" and we have the values given in the table, we can find the missing values:

To find A we need to substitute the , the value of "k" and into the equation and solve for "A":

To find B we need to substitute the , the value of "k" and into the equation:

To find C we need to substitute the , the value of "k" and into the equation and solve for "C":

To find D we need to substitute the , the value of "k" and into the equation:

6 equilateral triangles