Find an equation of the line containing the given pair of points.

(2,3) and (6.5)

M=1/2.

my question is where did 1 over 2 come from. how do m equal 1/2?

"one over 2" is the slope, one half. That is how we write fractions here.

The slope is 1/2 because the change in y is half the change in x.

m = (y2 - y1)/(x2 - x1)

Do the numbers and convince yourself