Question 318057
To find the distance d between P(8,7) and Q(5,4), use:
{{{d = sqrt((x[2]-x[1])^2+(y[2]-y[1])^2)}}} substitute: {{{x[1] = 8}}},{{{y[1] = 7}}},{{{x[2] = 5}}}, and {{{y[2] = 4}}}
{{{d = sqrt((5-8)^2+(4-7)^2)}}}
{{{d = sqrt((-3)^3+(-3)^2)}}}
{{{d = sqrt(9+9)}}}
{{{d = sqrt(18)}}}
{{{d = sqrt(9*2)}}}
{{{highlight(d = 3*sqrt(2))}}} 
For the midpoint, you will be finding the x- and y-coordinates of the midpoint, so use:
{{{x[m] = (x[1]+x[2])/2}}} and {{{y[m] = (y[1]+y[2])/2}}}
Use the same x- and y-coordinates of the two given points P and Q as above.
You can do this!