I believe it’s A. 10*8= 80 and 20*4= 80. When finding the area you multiply the base by the height. None of the other answers equal 80 so your answer is A.
solving for y. You get y = -2x +5, so the slope is –2. Perpendicular lines have opposite-reciprocal slopes, so the slope of the line we want to find is 1/2. Plugging in the point given into the equation y = 1/2x + b and solving for b, we get b = 6.