can someone check my work

what is the slope of the line that passes through the points (-2, 4.15) and (1, 1.24)?
My answer: -2.91/3
Do I need to simplify?

(-2, 4.15), (1, 1.24).

m = (1.24-4.15) /(1-(-2)) = -2.91/3 = -0.97.