Question

Qual é a taxa de variação da função do 1º grau que passa pelos pontos A (1, 3) e B(3, 11)​

Answer 1

$\Large\boxed{\begin{array}{l}\sf A(1,3)~e~B(3,11)\\\sf m\longrightarrow coeficiente~angular~ou~taxa~de~variac_{\!\!,}\tilde ao\\\sf m=\dfrac{y_B-y_A}{x_B-x_A}\\\\\sf m=\dfrac{11-3}{3-1}\\\\\sf m=\dfrac{8}{2}\\\\\sf m=4\end{array}}$