Question

СКОРЕЕ!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Answer 1

$5x-2y=c\; \; ,\; \; (2;4)\\\\x=2\; ,\; y=4\; \; \to \; \; \; 5x-2y=5\cdot 2-2\cdot 4=10-8=2\; \; ,\; \; c=2\\\\5x-2y=2\; \; \to \; \; 2y=5x-2\; \; ,\; \; \underline {y=2,5x-1}$