X - y = -5 -y = -x - 5 y = x + 5...slope here is 1. A perpendicular line will have a negative reciprocal slope. All that means is flip ur slope and change the sign. So our perpendicular line will have a slope of -1.
y = mx + b slope(m) = -1 (4,7)...x = 4 and y = 7 now we sub and find b, the y int 7 = -1(4) + b 7 = -4 + b 7 + 4 = b 11 = b
10/8 can be simplified to 5/4, which is the same as 1.25 (divide numerator 5 by denominator 4). So you have x>1.25. All numbers greater than 1.25 are possible solutions.
