The following table shows a proportional relationship between w and z. w=18 and z=2. Write an equation to describe the relationship between w and z.

w/z = 18/2

w = 9z

W=9z

Daniel Garwo

To write an equation that describes the relationship between w and z, we need to determine the constant of proportionality. The constant of proportionality represents how the values of w and z are related and can be found by dividing the values of w and z.

In this case, the value of w is 18 and the value of z is 2. So, to find the constant of proportionality, we divide w by z:

Constant of proportionality = w / z = 18 / 2 = 9

Now that we have the constant of proportionality, we can write the equation. In a proportional relationship, the equation form is y = kx, where y represents the dependent variable, x represents the independent variable, and k represents the constant of proportionality.

In this case, w is the dependent variable and z is the independent variable. So, the equation to describe the relationship between w and z is:

w = kz

Substituting the value of the constant of proportionality (k = 9), the equation becomes:

w = 9z