contestada


HELP I WILL GIVE BRAINIEST

The coordinates of point T are (0 ,4 ). The midpoint of ST is (1 ,−3 ). Find the coordinates of point S.

Respuesta :

rvkacademic

Answer:

(2, -10)

Step-by-step explanation:

The midpoint of a line connecting 2 points (x₁, y₁) and (x₂, y₂) is given by
[tex](x_{M}, y_{M}) = \left(\dfrac {x_{1} + x_{2}} {2} , \dfrac {y_{1} + y_{2}} {2}\right)[/tex]

We will assume that the coordinates of S are (x₂, y₂) and these have to be determined

First, add the x coordinates and divide by 2. This gives you the
x-coordinate of the midpoint. Then add the y coordinates of the two points and divide by 2 to get the y-coordinate of the midpoint

Here we are given the midpoint and coordinates of one point and we are asked to find the coordinates of the second point

  • First, take the midpoint formula
    [tex](x_{M}, y_{M}) = \left(\dfrac {x_{1} + x_{2}} {2} , \dfrac {y_{1} + y_{2}} {2}\right)[/tex]
  • Break it down so you have separate equations for the x and y coordinates of the midpoint
    [tex]x_{M} = \dfrac {x_{1} + x_{2}} {2}[/tex]
    [tex]y_{M} = \dfrac {y_{1} + y_{2}} {2}[/tex]
  • Rearrange each equation so that you're solving for x₂ and y₂
    [tex]x_{2} = 2x_{M} - x_{1}[/tex]
    [tex]y_{2} = 2y_{M} - y_{1}[/tex]
  • Using the values provided i.e. x₁ = 0, y₁ = 4 and [tex]x_M=1, y_M = -3[/tex]
    [tex]x_M = 2(1) - 0 = 2[/tex]  
    [tex]y_M = 2(-3) -4[/tex] [tex]= -6-4 = -10[/tex]
  • So the coordinates of S are (2, -10)




Otras preguntas