Can someone help me find the slope and the value of r

The classrooms are trying to raise $1,200.00 for charity. mrs. leblanc's class has raised 50%. mr. patel's class has raised $235.14 ms. warner's class has raised 1/3 as much as mrs. leblanc's class. how much more money is needed to reach the goal of $1,200.00?

What is the distance between the points (2 -3) and (-6 4) on the coordinate plane

When only separate discreet points are graphed it is called?