Math

Still not understanding the way to write the equation of the pair of points. (-2,-3) and (-6,-9) in the form of y=

  1. 👍 0
  2. 👎 0
  3. 👁 87
asked by Pam
  1. the slope of a line is constant. The slope of the line segment between the two points is

    m = ∆y/∆x = (-9+3)/(-6+2) = 3/2

    Now we have the slope, and it remains constant everywhere on the line. In particular, the line segment between (-2,-3) and (x,y) is 3/2, regardless of where (x,y) is on the line.

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

    Review the two-point form of the line equation.

    1. 👍 0
    2. 👎 0
    posted by Steve

Respond to this Question

First Name

Your Response

Similar Questions

  1. Algebra 2

    Evaluate the function when x=1. f(x)=4x-2. Write the input and output as a set of ordered pairs, and identify the domain and range of the ordered pair. (6 points) Ordered Pair: Domain: Range: Write an equation of direct variation

    asked by JojO on December 3, 2016
  2. Algebra

    Write the equation of the line passing through the given pair of points. Write your result in slope-intercept form. (-1,3) and (4,-2) Show equation I will be happy to critique your work on this. y-3=1(x+1) y-3=1x+-1 y=x+2?

    asked by Linda on May 20, 2007
  3. mat

    Write the equation of the line passing throught each of the given pairs of points. Write your result in slope-intercept form. (2, 3) and (2 , 4) I will be happy to critique your thinking on this. Notice in the pair of points the x

    asked by Dee on May 24, 2007
  4. math

    find an equation of the line containing the given pair of points. Use function notation to write the equation. (5/7,10/14) and (-1/7,13/14) f(x)

    asked by kate on October 8, 2010
  5. Math

    I need help with an equation problem. Write the equation of the line that passes through each pair of points. (-2, -7) and (3,8)

    asked by Johnnie on November 28, 2011
  6. math

    find an equation of the line passing through the pair of points. write the equation in Ax+By=C (-9,7), (-10,-4)

    asked by ann on October 29, 2013
  7. I need Help!!!

    Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (−3, 1) and (9, −3)

    asked by April on October 3, 2015
  8. Algebra

    Write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (Objective 3) (−3, 1) and (9, −3)

    asked by April on October 3, 2015
  9. Mathematics

    Can someone check my answers? 1. For the data in the table, does y vary directly with X? If it does write an equation for the direct variation.(X,y) (8,11) (16,22) (24,33) Yes y=2.75x Yes y=0.6875x*** Yes y=1.375x No y does not

    asked by Olivia on December 13, 2016
  10. math

    Write an equation of the line that passes through each pair of points (0,0) and (7,7)

    asked by Cristal on November 25, 2015

More Similar Questions