Hello:<span> the equation is : y = ax+b the slope is a : a×(1/2) = -1......( perpendicular to a line with a slope of 1/2) because : -2x+4y =8...y=(1/2)x+2 ) </span>
<span> a = -2 y=(-2x+b the line that passes through (2,1) :1 = -2(2)+b b =5 <span> the equation is : y = -2x+5</span></span>
The 60$ system had a greater percentage decrease because it was a lower number to begin with. Taking the same portion out of two different numbers will always be a greater decrease for the lower number.
