Question

Please help!!!! again

Answer 1

$\frac{y\ miles}{x\ minutes}=\frac{4\ miles}{28\ minutes}\ \ |cross\ multiply\\\\28y=4x\ \ \ \ |divide\ both\ sides\ by\ 28\\\\\boxed{y=\frac{4}{28}x\Rightarrow y=\frac{1}{7}x}$