For each pair of points, find the slope of the line that passes through both points.

a. (1,1) and (7,5)

b. (1,1) and (5,7)

c. (2,5) and (-1, 2)

d. (2,5) and (-7,-4

Respuesta :

Step-by-step explanation:

a. (1,1) and (7,5)

b. (1,1) and (5,7)

c. (2,5) and (-1, 2)

d. (2,5) and (-7,-4)

Slope of the line that passes through the points

  The slope = [tex]\frac{y_{2} - y_{1} }{x_{2} - x_{1} }[/tex]

a. (1,1) and (7,5) ;

    slope  = [tex]\frac{5-1}{7-1}[/tex]   = [tex]\frac{4}{6}[/tex]

     slope = [tex]\frac{2}{3}[/tex]

b. (1,1) and (5,7)

      slope  = [tex]\frac{7-1}{5-1}[/tex]  = [tex]\frac{6}{4}[/tex]

      slope = [tex]\frac{3}{2}[/tex]

c. (2,5) and (-1, 2)

      slope = [tex]\frac{2-5}{-1 - 2}[/tex]  = [tex]\frac{-3}{-3}[/tex]

       slope  = 1

d. (2,5) and (-7,-4)

      slope  = [tex]\frac{-4 - 5}{-7 - 2}[/tex]  

       slope = [tex]\frac{-9}{-9}[/tex]  = 1