Question: Use the four-step procedure for solving variation problems given below to solve the exercise: 1. Use an equation that models the given English statement. Is

Use the four-step procedure for solving variation problems given below to solve the exercise:

1. Use an equation that models the given English statement. Is this y=kx?

2. Substitute the given pair of values into the equation in step 1 and find the value of k, the constant of variation. Do I substitute 9 for y? And 12 for x?

3. Substitute the value of k into the equation in step 1. Is it 0.75 for k? This is where I get lost because this doesn't seem right.

4. Use the equation from step 3 to answer the problem's question.

The distance that a spring will stretch varies directly as the force applied to the spring. A force of 12 pounds is needed to stretch a spring 9 inches. What force is required to stretch the spring 15 inches?

Please explain each step and break this down for me.

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