Question

What is the slope that passes through the lines (2.1,-4.2) and (2.5,-5)

Answer 1

slope = (y2-y1)/(x2-x1)

= (-5--4.2) /(2.5 -2.1)

(-5+4.2)/(2.5-2.1)

=-.8/.4

m=-2

the slope is -2