130 likes | 272 Views
Solving Problems Using Direct and Inverse Variation. Remember the formulas:. Variation Formulas…. What is the equation for direct variation? What is the equation for inverse variation?. Use Direct Variation. If y = 6 and x = 3, what is the value of y when x = 5?
E N D
Solving Problems Using Direct and Inverse Variation Remember the formulas:
Variation Formulas… • What is the equation for direct variation? • What is the equation for inverse variation?
Use Direct Variation If y = 6 and x = 3, what is the value of y when x = 5? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 10
Use Direct Variation If y = 10 and x = 5, what is the value of y when x = 4? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 8
Use Direct Variation If y = 6 and x = 2, what is the value of y when x = 5? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 15
Use Direct Variation If y = 12 and x = 4, what is the value of y when x = 12? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 36
Use Direct Variation If y = 45 and x = 9, what is the value of y when x = 25? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 125
Use Inverse Variation If y = 10 and x = 5, what is the value of y when x = 2? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 25
Use Inverse Variation If y = .5 and x = 30, what is the value of y when x = 3? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 5
Use Inverse Variation If y = 15 and x = 6, what is the value of y when x = 18? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 5
Use Inverse Variation If y = 2 and x = 8, what is the value of y when x = 4? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 4
Use Inverse Variation If y = 6 and x = 4, what is the value of y when x = 8? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 3
Use Inverse Variation If y = 12 and x = 6, what is the value of y when x = 8? • First decide the formula to use: • Next, solve for k: • Now substitute k and x and solve for y: • y = 9