Question 64725
Two points determine a line, so they determine the
slope of the line
{{{m = (y[2] - y[1]) / (x[2] - x[1])}}}
where m is the slope
Let (4,5)  = ({{{x[2]}}} , {{{y[2]}}})
Let (-1,0) = ({{{x[1]}}} , {{{y[1]}}})
{{{m = (5 - 0) / (4 - (-1))}}}
{{{m = 5/5}}}
{{{m = 1}}} answer