Aká je rovnica čiary medzi (6, -5) a (-3,8)?

Aká je rovnica čiary medzi (6, -5) a (-3,8)?
Anonim

odpoveď:

# Y = -13 / + 9x 33/9 #

vysvetlenie:

#B = (- 3,8) "" A = (6, -5) "" C = (x, y)) #

# B_x-A_x = -3-6 = -9 #

# B_y-A_y = 8 + 5 = 13 #

#tan alpha = -13 / 9 #

# C_x-B_x = x + 3 #

# C_Y-B_y = y-8 #

#tan beta = (y-8) / (x + 3) #

# Alfa = beta #

#Tan alfa = tan beta #

# -13/9 = (y-8) / (x + 3) #

# -13x-39 = 9Y-72 #

# 9Y = -13x-39 + 72 #

# 9Y = -13x-33 #

# Y = -13 / + 9x 33/9 #