Question 53635
The slope, m, of a line is defined as {{{m=(y[2]-y[1])/(x[2]-x[1])}}}.  For the two ordered pairs your provided, it doesn't matter which is which, you'll get the same answer.  So, just substitute your values (ordered pairs) into the equation and get {{{m=(-3-6)/(-3-5)}}}, which simplifies to {{{m=-9/-8}}}, or {{{m=9/8}}}..