Question 152381
You have used the slope formula correctly: {{{m = (y[2]-y[1])/(x[2]-x[1])}}} and substiuting the given points, you got:
{{{m = (7-1)/(2-5)}}}
{{{m = 6/(-3)}}} Now you should reduce this fraction to its lowest terms:
{{{m = -2}}}
Now let's look at the fractions.
{{{m = (1-(-2))/((-3/2)-(-1/2))}}}
{{{m = (1+2)/((-3/2)+(1/2))}}}
{{{m = 3/(-2/2)}}}
{{{m = 3/(-1)}}}
{{{m = -3}}}