Did you notice for each increase of 2 in the x's , there is a decrease of 3 in the y's
so quick way:
slope = -3/2
What is the slope for the following set of data?
x 2 4 6 8
y 1 -2 -5 -8
2 answers
x-change: +2
y-change: -3
slope: -3/2
y-change: -3
slope: -3/2