Question

Múltiple choicewhich point is a solution of the equation31. 3x - 8y = 11A. (1, 1)B. ( 1, -1)C. ( -1, 1)D. (-1, -1)

Answer 1

We have the following:

$\begin{gathered} 3x-8y=11 \\ 3\cdot1-8\cdot1=-5 \\ 3\cdot1-8\cdot-1=11 \\ 3\cdot-1-8\cdot1=-11 \\ 3.-1-8\cdot-1=5 \end{gathered}$

therefore, the answer is B (1, -1)