slope = 3
to calculate the slope m use the ' gradient formula '
m = [tex]\frac{y_{2-y_{1} } }{x_{2-x_{1} } }[/tex]
with ([tex]x_{1}[/tex],[tex]y_{1}[/tex]) = (2, -5 ) and ([tex]x_{2}[/tex],[tex]y_{2}[/tex]) = (4, 1)
m= [tex]\frac{1+5}{4-2}[/tex] = [tex]\frac{6}{2}[/tex] = 3
