first use the slope formula( y1-y2/x1-x2) to set up the equation. the y values on top, x value on bottom. and always subtract. -6-1/ 4–2 then combine the numbers in the numerator together and the numbers in the denominator together. in this case you have two negatives between the 4 and the 2 so it becomes a plus sign -7/4+2 -7/6 and then you have ur answer.