To calculate the slope given two points, we use the formula y2-y1/x2-x1. You can switch the ones and twos and the slope will be the same. We will have (-1,3) represent (x1,y1) and (5,3) represent (x2,y2).
Now we plug these numbers into the equation.
3-3/5+1 0/6 Undefined
Since the number is divided by zero, the slope is undefined, or the line is vertical. Just to check, we will switch the ones and twos.
3-3/-6 0/-6 Undefined
Our line is vertical, therefore our slope is undefined.
