Which expression can be used to find the slope of a line containing the points (–3, 2) and (7, –1)?

Question

Which expression can be used to find the slope of a line containing the points (–3, 2) and (7, –1)?

Answer 1

When 2 points are given, you would use the point slope formula. y-yo = m(x-xo)

Where yo = either of the 2 point y coordinates

xo = either of the 2 point x coordinates (paired with the above point)

m = the slope

In this case, m = (-1-2)/(7+3) = -3/10

Using point 1,

y-2 = (-3/10)(x+3) = (-3/10)x -9/10 or y = (-3/10)x + 11/10