The variables x and y vary directly. use the given values to write an equation that relates x and y. x = 18 y = 6

Step-by-step explanation:

It is given that x and y vary directly. It means y is directly proportional to x.

It can be written as

          .... (1)

where, k is the constant of proportionality.

The given values are x=18 and y=6.

Substitute these values in the above equation.

Divide both sides by 18.

Substitute the value of k in equation (1).

Therefore, the required equation is .

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step-by-step explanation:

step-by-step explanation:

points a and b are equidistant from the desired line, so the line you find by using them will go through point r.

using points other than a and b will give the desired line only if they are equidistant from r. if they are randomly located, the perpendicular line you create will not necessarily go through point r, hence will not be a solution to the problem.