A graph has Quantity supplied on the x-axis, from 0 to 50 in increments of 10, and price in dollars on the y-axis, from 0 to 18 in increments of 2. A line that represents supply has a positive slope and a line that represents demand has a negative slope. The lines intersect each other at a point. Where is the equilibrium point on this graph?

where the demand curve begins and the supply curve ends
where the demand curve and the supply curve cross each other
where the supply curve begins and the demand curve ends
where both curves begin heading downward