2x - 3y + 5 = 0 2x + 5 = 3y 2/3x + 5/3 = y...slope here is 2/3. A perpendicular line will have a negative reciprocal slope. All that means is " flip " the slope and change the sign. So our perpendicular line will have a slope of -3/2.
y = mx + b slope(m) = -3/2 (-1,2)...x = -1 and y = 2 sub and find b, the y int 2 = -3/2(-1) + b 2 = 3/2 + b 2 - 3/2 = b 4/2 - 3/2 = b 1/2 = b
so ur perpendicular equation is : y = -3/2x + 1/2 or 3x + 2y = 1 or 3x + 2y - 1 = 0
