8:2 can be simplified to 4:1. (:
The image would then be in quadrant 3 because say you "folded" the coordinate plane across the x-axis, then the point attached onto the other side of the plane, the point would be in the 3rd quadrant.
The answer is 21 because 9+10=21 see im smart
Another way to express 7/10 is .7
So, 4 times .7 equals 2.8.
Y = -2x + 8
The slope of the perpendicular line will be: y = -1/2x + 5
