4. Given the data below, Ted produced the y diagram on his computer using excel. 16 14 y = 1.696x + 0.728 R3 = 0.975 12 X 1 3 2 5 8 4 7 10 y 2.8 6.2 4.1 9.4 14.1 6.1 13.3 Linear (y) y=1.696x + 0.728 R2 = 0.975 2 4 6 10 a) Explain what this means b) Determine the value of x if y=20 5. Explain the difference between Permutations and Combinations (give an example of each)y 16 14 y = 1.696x + 0.728 R2 = 0.975 12 10 8 - Linear (y) ONDO O 2 4 8 10