# How do you solve the system of equations 2x - 5y = 10 and 4x - 10y = 20?

If you re-write $2 x - 5 y = 10$ as a linear (that means in a form that can be drawn as a straight line) function in standard format, you would get $y = \frac{2 x - 10}{5}$. If you re-write $4 x - 10 y = 20$ as a function in standard form you would also get $y = \frac{2 x - 10}{5}$. Therefore both equations represent the same line; any (x,y) pair that works for one also works for the other.