MM
Mashaal Masha
Apr 11, 2024
$$8x+7y=9$$ $$24x+21y=27$$
For each real number $r$, which of the following points lies on the graph of each equation in the $xy$-plane for the given system?
Difficulty: Hard
A:
$(r,-\frac{8r}{7}+\frac{9}{7})$
B:
$(-\frac{8r}{7}+\frac{9}{7},r)$
C:
\((-\frac{8r}{7}+9,\frac{8r}{7}+27)\)
D:
$(\frac{r}{3}+9,-\frac{r}{3}+27)$
ID: 661862ee5f7d351595780299