Question 1183814


 Find the gradient of the line joining each of the following points 

the gradient of the line is a slope{{{m}}}

({{{2}}},{{{3}}}) and ({{{4}}},{{{7}}})

{{{m=(y[2]-y[1])/(x[2]-x[1])}}}

{{{m=(7-3)/(4-2)}}}

{{{m=4/2}}}

{{{m=2}}}



({{{-1}}},{{{3}}}) and ({{{5}}},{{{4}}})

{{{m=(y[2]-y[1])/(x[2]-x[1])}}}

{{{m=(4-3)/(5-(-1))}}}

{{{m=1/(5+1)}}}

{{{m=1/6}}}



({{{-5}}},{{{-5}}}) and ({{{-7}}},{{{-5}}})

{{{m=(y[2]-y[1])/(x[2]-x[1])}}}

{{{m=(-5-(-5))/(-7-(-5))}}}

{{{m=(-5+5)/(-7+5)}}}

{{{m=0/(-2)}}}

{{{m=0 }}} ->a zero slope has a horizontal line