arianaaaa03 arianaaaa03
  • 03-09-2019
  • Mathematics
contestada

find r (2,r) and (-5,,11) ; m= -2

Respuesta :

Cricetus
Cricetus Cricetus
  • 06-09-2019

Answer:

r=-3

Step-by-step explanation:

[tex] m=\frac{y_2-y_1}{x_2-x_1}[/tex] -----(A)

Here we are given that

[tex] (x_1,y_1) = (2,r) [/tex]

[tex] (x_2,y_2) = (-5,11) [/tex]

And the value of m is -2

Replacing them in (A)

[tex] -2=\frac{11-r}{-5-2}[/tex]

[tex] -2=\frac{11-r}{-7}[/tex]

[tex] -7 \times -2=11-r[/tex]

[tex] 14=11-r[/tex]

[tex] r=11-14[/tex]

[tex] r=-3[/tex]

Hence the value of r is -3 and the coordinate is(2,-3)

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