Question

identifique as funçoes cujos graficos sao retas que passam pela origem :
a)y=3x
b)y=2x+5
c)y=8x
d)y=3

Answer 1

$y=0 \\ \\ \\ a) \\ 0= 3x \\ x=0 \\ O(0;0)\\ \\ b) \\ 2x+5=0 \\ x= \frac{-5}{2} \\ O( -\frac{5}{2},0) \\ \\ c) \\ 0=8x \\ x=0 \\ O(0,0) \\ \\ d) \\ y=3 \\ \\ resposta \\ \\ a),b),c)$