Question 146382
The slope of a line is given by:
{{{m = (y[2]-y[1])/(x[2]-x[1])}}}
In your problem, (2, 4) are ({{{x[1]}}},{{{y[1]}}}) and (4, -2) are ({{{x[2]}}},{{{y[2]}}})
Make the appropriate substitutions to get:
{{{m = (-2-4)/(4-2)}}} Simplify.
{{{m = -6/2}}}
{{{m = -3}}} This is the slope.