odpoveď:
# m = -2, "" b = 18 #
vysvetlenie:
eqn. priamky so známymi súradnicami
# (x_1, y_1), "" (x_2, y_2) #
je daná vzorcom
# (Y-y_1) / (x-x 1) = (y_2-y_1) / (x_2-x 1) #
pre #A (6,6), "" B (12,3) #
# (Y-6) / (x-6) = (12-6) / (3-6) #
# (Y-6) / (x-6) = 6 / -3 = -2 #
# Y-6 = -2 (X-6) #
# Y = 6 + (- 2x) + 12 #
# Y = -2x + 18 #
# m = -2, "" b = 18 #