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Math/Algebra do u know how to do slope intercept?

posted by on .

The following problems are in slope,point slope, and slope intercept forms of a line.

Could you check these thanks.

Find the slope intercept form of a line that passes through these two points (-4,4) and (2,1)

Answer: y= -1/2x-2

Find the slope intercept form of a line that is parallel to the line created in problem #1 and passes through the point ( -2,6)

Answer: y= -1/2x+4

Find the slope intercept form of a line that is perpendicular to the line created in problem #1 and passes through the point (1,3). What can you say about the relationship of this line and the line created in problem #2.

Answer: y= -1/2x+1/1/2
My response: I can say that is I used the same slope which is -1/2x

  • Math/Algebra do u know how to do slope intercept? - ,

    two points (-4,4) and (2,1)
    m = slope = (Y1-Y1)/(X2-X1)
    = (1-4)/(2+4) = -3/6 = -1/2
    then put either point in:
    y = -(1/2) x + b
    1 = -(1/2) 2 + b
    1 = -1 + b
    b = 2
    so
    y = -(1/2) x + 2
    I think you have a sign error in your answer for b

    if parallel, same slope = -(1/2)
    y = -(1/2) x + b
    now the point in
    6 = -(1/2)(-2) + b
    6 = 1 + b
    b = 5
    so
    y = -(1/2) x + 5

    then perpendicular
    m = -1/-(1/2) = 2
    s
    y = 2 x + b
    3 = 2(1) + b
    b = 1
    so
    y = 2 x + 1

  • Math/Algebra do u know how to do slope intercept? - ,

    By the way, you can always check the answers by seeing if all the points fit the line you come up with.

  • Damon thank you ()() - ,

    Thank you very much you really Helped!

  • Math/Algebra do u know how to do slope intercept? - ,

    I had the same homework to not like this but now I know how to do it thanks chico for posting a similar problem and thanks damon

  • Math/Algebra do u know how to do slope intercept? - ,

    yo sup peops 2x - is y
    -

  • Math/Algebra do u know how to do savle a algebra - ,

    by - the two numbers and it gives you x or y or w

  • Math/Algebra do u know how to do slope intercept? - ,

    WHAT THE HECK IS ALLL THIS MESSS

  • Math/Algebra do u know how to do slope intercept? - ,

    HOW WILL U DO THE MESS I DON'T UNDERSTNAD IT!!!!!!!!! IGUESS

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