1. 2.6 – Ratios & Proportions

2. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 ,

3. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply.

4. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply. 2 =

5. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply. 2 =

6. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply. 2 =

7. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply. 2 = =

8. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply. 2 = = 28

9. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. a) 2 , 8 *Set them equal to each other & cross multiply. 2 = = 28 This is true, so they are equivalent ratios.

10. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. b) 15 , 35 *Set them equal to each other & cross multiply.

11. Ex. 1 Determine whether each pair of ratios are equivalent ratios
Ex. 1 Determine whether each pair of ratios are equivalent ratios. b) 15 , 35 *Set them equal to each other & cross multiply. 15 = = 630 This is false, so they are not equivalent ratios.

12. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x =

13. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x = 3 *Cross Multiply 10 5

14. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x = 3 *Cross Multiply 10 5

15. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x = 3 *Cross Multiply = 5x

16. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x = 3 *Cross Multiply = 5x

17. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x = 3 *Cross Multiply = 5x 5 5

18. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. a) x = 3 *Cross Multiply = 5x = x

19. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. b) (x + 4) = 3 5 8

20. Ex. 2 Solve each proportion
Ex. 2 Solve each proportion. If necessary, round to the nearest hundredth. b) (x + 4) = 3 *Cross Multiply = 8(x + 4) 15 = 8x = 8x = x