Math

posted by .

Find the equation of the perpendicular bisector of the line segment joining the points (1, 2) and (-2, 1)

Does it mean I have to find the line. Then find a line that cuts that line in to half because perpendicular bisector

  • Math -

    just find the slope of the line: 1/3

    the perp has slope -3, so now we have a midpoint (-1/2,3/2) and a slope (-3), and our line is

    y - 3/2 = -3(x + 1/2)

  • Math -

    So the equation is -3(x+1/2)?
    Like there's no Y= in it?

  • Math -

    I gave you the equation. There's always a y. If you want it it slope-intercept form, which most people find comforting, that would be

    y = -3x

    Visit

    http://rechneronline.de/function-graphs/

    and plot the two functions

    (x+5)/3 and -3x

    and you will see that the two lines intersect midway between the two given points

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. math plz

    hi, is there an equation to finding the perpendicular bisector of a line. for example i had a line b (1,1) and c(8,1) and a was (6,5) how would i find the bisector from a going through line bc?
  2. Math -Precal 11

    Show that the point P(7,7) is on the perpendicular bisector of the line segment joining A (6,-1) to B (0, 3). Also, verify that P is the same distance from A and B. For what values of k is the line y=l tangent to the circle (x-3)^2 …
  3. Math(word problem)

    For the line joining points A(-1, 3) and B(5, 7): a.Find the midpoint of the line. b.Find the distance of the line. c.Find the slope of the line. d.Find the y-intercept of the line. e.What would be the slope of a line perpendicular …
  4. Math 9

    Find an equation for the perpendicular bisector of the line segment connecting the points (-2, 5) and (3, -7).
  5. add maths

    Find the equation of the perpendicular bisector of the straight line joining the points A(-1,0)and B(3,4).
  6. Math

    1. Determine the equation of the right bisector of the line segment E(2, 6) and F(4, -2). Draw the diagram. 2. Given three points D(2, 5) E(-2, -3) and F(4, -6) determine whether or not the line through D and E is perpendicular to …
  7. Math

    Write a linear equation in slope intercept form for each of the following: A line perpendicular to y=x+2 that passes through the origin. A line perpendicular to y = -1/2x + 5 that passes through the points (4,1) and (1,-5). A line …
  8. Math Urgent Please Help

    Which construction is illustrated below? a. a perpendicular to a given line from a point not on the line b. a perpendicular to a given line from a point on the line c. perpendicular bisector of a given segment d. bisector of a line
  9. math2

    I was solving a problem. In It r have been given that two lines are perpendicular to each other The equation of one line 2x-3y+4=0 Now i have to find the equation of another line We can find it by finding the slope of the abovementioned …
  10. Math (Calculus) (mean value theorem emergency)

    Consider the graph of the function f(x)=x^2-x-12 a) Find the equation of the secant line joining the points (-2,-6) and (4,0). I got the equation of the secant line to be y=x-4 b) Use the Mean Value Theorem to determine a point c in …

More Similar Questions