Question

Qual a resolução desse exercicio ? (Muito Urgente pfv)

Answer 1

A(-2;1)

B(5;3)

F(x)=ax+b

F(-2)=-2a+b

1=-2a+b

F(5)=5a+b

3=5a+b

1=-2a+b

3=5a+b

b=1+2a

3=5a+1+2a

2=7a

a=2/7

b=1+2.2/7

b=1+4/7

b=11/7

F(x)=2x/7+11/7