Pls help question on the pic

Find the slope of the line that contains the following points. r(-2, 4), s(6, -2)

Segment ab is shown on the graph. which shows how to find the x-coordinate of the point that will divide ab into a 2: 3 ratio using the formula

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels