Answer:
A
Step-by-step explanation:
la recta:
[tex]y-yo=m(x-xo)[/tex] (*)
P=(xo,yo)
[tex]m=\frac{Ya-Yb}{Xa-Xb}[/tex]
substituindo:
[tex]m=\frac{3-7}{1-3}\\\\m=2[/tex]
Seja P=A=(xo=1,yo=3), utilizando a formula (*)
[tex]y-3=2(x-1)\\y=2x-2+3\\y=2x+1[/tex]
