tzoov6098 tzoov6098
  • 08-01-2020
  • Mathematics
contestada

Find the equation of a line through (1,1) which
isperpendicular to a line through (1,3) and (2,5).

Respuesta :

lisboa lisboa
  • 09-01-2020

Answer:

[tex]y=\frac{-1}{2}x+\frac{3}{2}[/tex]

Step-by-step explanation:

Point on a line is  (1,3) and (2,5).

[tex]slope=\frac{y_2-y_1}{x_2-x_1} =\frac{5-3}{2-1} =2[/tex]

slope of given line is 2

slope of perpendicular lines are negative reciprocal of one another

slope of perpendicular line is -1/2

slope = -1/2     (1,1)

[tex]y-y_1=m(x-x_1)[/tex]

[tex]y-1=\frac{-1}{2}(x-1)[/tex]

[tex]y-1=\frac{-1}{2}x+\frac{1}{2})[/tex]

add 1 on both sides

[tex]y=\frac{-1}{2}x+\frac{3}{2}[/tex]

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