Question

Explain how you can find the constant of proportionality from points on a graph Representing a proportional relationship when it shows a point with an X value of one and if it doesn’t show an X value of one

Answer 1

Answer:

When the x-value is 1 , the y-value is the constant of proportionality. If there isn’t an x-value of 1, choose another point and divide the y-value by the x-value to find the constant of proportionality

Answer 2

The constant of proportionality from points on a graph representing a proportional relationship when it shows a point with an x value of one is y itself and if it doesn’t show an x value of one is y/x. This can be obtained by understanding what constant of proportionality is.

What is constant of proportionality?

• Constant of proportionality is the relation between two sets of values.

• The formula for finding the constant of proportionality is,

            y = kx, constant of proportionality.

• When x = 1, y = k(1) ⇒ k = y

• When x ≠ 1, y = kx ⇒ k = y/x

Hence the constant of proportionality from points on a graph representing a proportional relationship when it shows a point with an x value of one is y itself and if it doesn’t show an x value of one is y/x.

Learn more about constant of proportionality here:

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