Question

na função afim f(x)=-7x+3 determine f(2) e f(1/7)

Answer 1

$y = - 7x + 3 \\ y = - 7.(2) + 3 \\ y = - 14 + 3 \\ y = - 11$


$y = - 7x + 3 \\ y = - 7(1 \div 7) + 3 \\ y = - 1 + 3 \\ y = 2$

Answer 2

f(x)=7x+3
f(2)=7x+3
f(2)=7.2+3
f(2)=14+3
f(2)=17


f(x)=7x+3
f(1/7)=7x+3
f(1/7)=7.1/7+3
f(1/7)=7/7+3
f(1/7)=4