Answer
$\{(x,y)|y=-\frac{2}{5}x+2 \}$ where $x$ is any real number.
Work Step by Step
Simplify the 2nd equation by dividing by 2 to get $2x+5y=10$ which is the same as the 1st equation. Thus the system is dependent with solutions
$\{(x,y)|y=-\frac{2}{5}x+2 \}$ where $x$ is any real number.