Math (Please help!!)

Given A(-4,-2), B(44), and C(18,-8, answer the following questions
Write the equations of the line containing the altitude the passes through B in standard form.
Write the equation of the line containing the median that passes through point C in slope-intercept form
Write the equations for the line containing perpendicular bisector of AC in point-slope form

I'm on a deadline and I'm honestly so tired and my brain isn't working right. Could someone please help me understand this and explain in plain terms what its asking?? Thank you so much!!

  1. 👍
  2. 👎
  3. 👁
  1. The first thing you would have done of course is to make a sketch, it does not have to be perfect.

    Secondly, watch your sloppy typing, I will read point B as (4,4) and point C as (18,-8)

    In the first part, you want the equation of the line BD, where D is on AC, and BD is perpendicular to AB.
    slope of AB = (-8+2)/(18+4) = -6/22 = -3/11
    so the slope of BD = + 11/3
    and the equation is
    y = (11/3)x + b, with (4,4) on it, so
    4 = 44/3 + b
    12 = 44 + 3b
    b = -32/3

    y = (11/3)x - 32/3

    The slope of the perpendicular bisector of AB is also 11/3 , but this time the midpoint of AB lies on it.
    midpoint of AB = ( (-4+18)/2 , (-2-8)/2 )
    = (7,-5)

    This time you want it in slope-point form, so
    y+5 = (11/3)(x-7)
    simplify and you got it

    1. 👍
    2. 👎
  2. I dont really understand the last one.. Could you explain more please?

    1. 👍
    2. 👎
  3. To do these kind of questions, you MUST know how to find the midpoint between two given points. That is what I did to find (7,-5)

    You must also know that the equation of a line in point slope form for a given slope m and a given point (a,b) is
    y - b = m(x - a).
    that is what I used to find the line

    1. 👍
    2. 👎
  4. man how did 12 = 44 + 3b become b = -32/3

    1. 👍
    2. 👎
  5. can someone just answer the last one... it's the only one I can't get

    1. 👍
    2. 👎
  6. He got -32/3 because it was
    12=44-3b you need to simplify this
    so
    12-44=-32 and you need to divide 3b by 3 to get the variable by itself

    so you get
    b=-32/3

    1. 👍
    2. 👎
  7. can you answer the last one clearly

    1. 👍
    2. 👎
  8. Reiny got some attitude about sloppy typing when he had some too XD

    1. 👍
    2. 👎
  9. Oh nvm

    1. 👍
    2. 👎

Respond to this Question

First Name

Your Response

Similar Questions

  1. math

    graph the line with slope 1/2 passing through the point(-5,-2) find the slope of the line 5x+5y=3 write answer in simplest from consider the line 2x-4y=4 what is the slope of a line perpendicular to this line. what jis the slope

  2. Calculus

    a) Find a Cartesian equation relating and corresponding to the parametric equations: x=2sin(3t), y=9cos(3t). Write your answer in the form P(x,y)=0, where P(x,y) is a polynomial in x and y, such that the coefficient of y^2 is 4.

  3. PreCAL

    Write an equation in slope–intercept form of the line with the given parametric equations. x = 9t + 2 y = –6t + 9 Answer Choices (A) y=-2/3x-3/7 (B) y=-3/2x+3/31 (C) y=31/3x-2/3 (D) y=-2/3x+31/3

  4. Math

    A 100 point test contains a total of 20 questions. The multiple choice questions are worth 3 points each and the short response answer questions are worth 8 pints each. Write a system of linear equations that represents this

  1. Math; Solve by Graphing

    Which description best describes the solution to the following system of equations? y = −x + 4 y = 3x + 3 Line y = −x + 4 intersects the line y = 3x + 3. Lines y = −x + 4 and y = 3x + 3 intersect the x-axis. Lines y = −x +

  2. Math(Factorial)

    A women student is to answer 10 out of 13 questions on a test. Find the number of choices where she must answer: (a) the first two questions; (b) the first or second questions but not both; (c) exactly 3 out of the first 5

  3. Pre-Calculus

    2. Write an equation in slope-intercept form of a line with the given parametric equations. x = 9t + 2 y = 2t – 2 answer choices: a)y=(2/9)x - (22/9) b)y=(22/9)x + (2/9) c) y=(9/2)x - (9/22) d) y=(2/5)x + (2/3) If you could show

  4. Algebra

    1. for the data in the table, does y vary directly with x? if it does write an equation for the direct variation. 10 | 12 15 | 18 20 | 24 A. yes; y = 1.2x B. yes; y = 2x C. yes; y = x + 1 D. no; y does not vary directly with x 2.

  1. Math

    Write the parametric equations of a line perpendicular to 4x + 8y +7 =0 with the same x-intercept as [𝑥,𝑦]=[2,7]+𝑡[−10,3].

  2. Geometry

    1.) A skateboard ramp has a 158° entry angle. Find the measure of ∠1. 2.) Which of the following equations is parallel to the line passing through A(-2, 7);B(-2, -2)? 3.) Which of the following equations would graph a line

  3. Algebra

    1. Find the slope for the following line: y=(3/4)x-7 A. -7 B. 7 C. 3/4 D. -4/3 2. What is the y-intercept of the graph of the line given by the equation 3y+4x=15? A. 5 B. 4 C. 3 D. -4/3 Can someone please help answer the

  4. Math

    Kosuke wrote a mathematics contest consistingof 25 multiple choice questions, the scoring system gave 6 points for a correct answer, 2 points for not answering, and 1 point for an incorrect answer.Kosuke got x correct and left y

You can view more similar questions or ask a new question.