Please help quick please

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

The border line of the linear inequality 4x + 7y < 5 is dotted true or false?

Use mathematical induction to prove the statement is true for all positive integers n, or show why it is false. 1^2 + 4^2 + 7^2 + + (3n - 2)^2 = [n(6n^2-3n-1)/2]