Question

Just answer as quick as possible thank u

Answer 1

ANSWER

D. (-2,5)


EXPLANATION

The given equations are

$8x + 5y = 9...(1)$

and

$y = x + 7...(2)$


We substitute equation (2) into equation (1) to get,

$8x + 5(x + 7) = 9$


We expand the bracket to get,


$8x + 5x + 35 = 9$

Grouping similar terms, we obtain,


$8x + 5x = 9 - 35$

Simplify to get,
$13x = - 26$

Divide both sides by 13 to obtain,


$x = - \frac{26}{13}$


$x = - 2$



This implies that,


$y = - 2 + 7$

$y = 5$

The solution is (-2,5)