Find the slope and the y-intercept of the line. y=7x-3

When you answer this can you explain

The test scores of 32 students are listed below. construct a boxplot for the data set and include the values of the 5-number summary. 32 37 41 44 46 48 53 55 57 57 59 63 65 66 68 69 70 71 74 74 75 77 78 79 81 82 83 86 89 92 95 99

What is the 17th term in the arithmetic sequence in which a6 is 101 and a9 is 83