Y = -2/3x + 5....the slope here is -2/3. A perpendicular line will have a negative reciprocal slope. To find the negative reciprocal, we flip the slope and change the sign. So our perpendicular line will have a slope of 3/2 (see how I flipped -2/3 making it -3/2....and then changed the sign, making it 3/2)
y = mx + b slope(m) = 3/2 (8,1)....x = 8 and y = 1 now we sub and find b, the y int 1 = 3/2(8) + b 1 = 12 + b 1 - 12 = b -11 = b
so ur perpendicular equation is : y = 3/2x - 11 <==