Question

a lei que determina a função do 1 grau cuja reta intercepta os eixos (-8;0) e (0;4) é? A f(×) =2×+5 B f(×)=×+4 C f(×)=3×+15 D f(×)=×+7 ​

Answer 1

Resposta:

Nenhuma das questões anteriores.

Explicação passo-a-passo:

$\displaystyle \left[\begin{array}{ccc}x&y&1\\-8&0&1\\0&4&1\end{array}\right] =0\\\\\\\left[0.1-4.1\right]x-\left[(-8).1-0.1\right]y+(-8).4-0=0\\\left[0-4\right]x-\left[(-8)-0\right]y+(-32)=0\\-4x + 8y - 32=0~~~(\div4)\\-x+2y-8=0\\2y=x+8\\\\y=\frac{x}{2} +\frac{8}{2} \\\\y=\frac{x}{2} +4$