Algebra

posted by .

How would you solve these types of problems? They confuse me!

1. Write the quation of the line that passes through points (-8,-6) and (5,3)

2. Write the equation of the line that passes through (3,-4) and has a slope of 2.

I know that you have to do something with y=mx+b, but I don't know what. I also have a graphing calcluator if that helps with anything.

  • Algebra -

    1. The slope of the line will be
    m = (y2-y1)/(x2-x1) = 9/13
    The equation will have the form
    y-y1 = m(x-x1)
    Use x1, y1, and rewrite this as:
    y+6 = (9/13)(x+8)
    y = (9/13)x -6/13

    The same approach will work for #2

  • Algebra -

    how did you get from
    y+6 = (9/13)(x+8)
    to
    y = (9/13)x -6/13 ?

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Algebra (grade 9)

    Write an equation in point-slope form of the line that passes through the given points: 1. (5,-6), (1,-7) 2. (6,-3), (-1,9) 3. write an equation of a line that is perpendicular to y=-3x+5 and passes through (4,3).
  2. Math 101

    Find the equation for each of the following items below: a. A line that passes through (6,26) and has a slope of 3. b. A line that passes though the points (5,5) and (10,20) c. A line that passes through (9,25) and has a slope of -3. …
  3. math

    i have more than one question so if u no any of the answers please tell me 1.) write the point-slope form of the equation of the line with slope -2 passing through the point ( -5, -9). 2.) write the point-slope form of an equation …
  4. mat 101

    Equation for a line that passes through (6,26) and has a slope of 3 Equation for a line that passes through the points (5,5) and (10,20) Equation for a line that passes through (9,25) and has a slope of -3. Equation for a line that …
  5. intermediate algebra

    Write the equation of the line: The points are at (-8,-6) and (0,0). The line passing through these two points has a y-intercept of 0 since it passes through the origin. The slope is -6-0/-8-0=3/4 How would I finish this?
  6. Algebra II

    Can you make sure my Algebra II work is correct?
  7. Algebra

    Please help me to solve this problem. Thank you in advance for helping to solve this problem. Have a great day. Here is the question?
  8. geometry

    I would love for someone to check my work on the seven problems that I did. I would be eternally grateful. I am going to list my problems and answers. Even if you only want to check one of them, that would be great. 1. Write an equation …
  9. Math please.

    What is the y-intercept of y = 2/3x + 2? I have to write it out but how?
  10. 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 that …

More Similar Questions