Can some one Help me please

65 8 7 4 5 6 8 4 3 2 1 9 5 6 4 2 1 6 5 1 5 1 3 2 3 5 multiply the third number in the first row by the seventh number in the third row. add this result to the fifth number in the second row. add to this total ten times the fourth number in the third row. subtract the eighth number in the first row from the result.

The lines shown below are parallel. if the green line has a slope of -1, what is the slope of the red line?

Can somebody 1. what is the formula for finding the vertical distance between two points on a coordinate plane?