Question

Determine a equacao geral da reta q passa pelos pontos dados.
A ) (3,2) e B) (2,1)

Answer 1

a = 1 - 2 ==> a = - 1 ==> a = 1
      2 - 3               - 1
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a = 1  e  P (3,2)

y = ax + b ==> 1.3 + b = 2 ==> b = 2 - 3 ==> b = - 1
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y = ax + b ==> y = 1.x - 1  ou y = x - 1