Question 148226
The slope, m, of a line that passes through two points, ({{{x[1]}}}, {{{y[1]}}}) and ({{{x[2]}}}, {{{y[2]}}}) is given by:
{{{m = (y[2]-y[1])/(x[2]-x[1])}}}
So, if you make the appropriate substitutions of the x- and y-coordinates from the two given points, (18, 11) and (9, 2), you can find the slope, m.
{{{m = (2-11)/(9-18)}}}
{{{m = (-9)/(-9)}}} Simplify.
{{{m = 1}}}