What is the equation of the line passing through #(21,18), (0,5)#?

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Answer 1 · 2016-03-13T01:49:10

#13x-21y=-105#

Let #P_2(21, 18)# and #P_1(0, 5)#

By the Two-point Form

#y-y_1=(y_2-y_1)/(x_2-x_1)(x-x_1)#

#y-5=(18-5)/(21-0)(x-0)#

#y-5=(13/21)*x#

#21y-105=13x#

#13x-21y=-105#

God bless....I hope the explanation is useful.