Question

The value of y varies directly with x, and y=10 when x=4. Find x when y=14.

Answer 1

$y=10\ \ \ and\ \ \ x=4\\\\ y=14\ \ \ and\ \ \ x=?\\\\ Making\ ratio:\\ 10-4\\14-x\\\\ Cross\ multiplication:\\ 10x=4*14\\ 10x=56\ \ \ |Divide\ by\ 10\\x=5,6\\\\solution\ is\ x=5,6.$