Question

A equacao geral da reta que passar pelos pontos A(5,2) e B(3,0) E

A)X-Y+3=0
B)X+Y+3=0
C)X-Y-3=0
D)X+Y-3=0


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Answer 1

y = ax + b

a = y2-y1/x2-x1

a = 0-2/3-5

a = -2/-2

a = 1

y= 1x + b

2 = 1.5 + b

b = 2 - 5

b = -3

y = x - 3

x - y - 3 = 0

Resposta C