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Model Direct Variation

Model Direct Variation. Linear equations satisfying y = ax where a ≠ 0 show direct variation . The nonzero number a is called the constant of variation , and the y is said to vary directly with x . Direct variation?.

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Model Direct Variation

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  1. Model Direct Variation

  2. Linear equations satisfying y = ax where a ≠ 0 show direct variation. The nonzero number a is called the constant of variation, and the y is said to vary directly with x. Direct variation?

  3. Tell whether the equation represents direct variation. If so, identify the constant of variation.

  4. Find the equation of direct variation that passes through the point (5, 3). Find the equation of direct variation that passes through the point (-4, 12).

  5. Vacation Time: At one company, the amount of vacation time v (in hours) an employee earns varies directly with the amount of time t (in weeks) he or she works. An employee who works 2 weeks earns 3 hours of vacation. Write a direct variation equation that relates t and v. How many hours of vacation time does am employee earn in 8 weeks?

  6. Homework: Pg. 256 #3-8, 12-22 even, 23-27, 31, 34, 37, 40, 42, 46, 47

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