Can someone please help me with math homework its writing equation in standard from AX+By=C?

Okay so it says write the equation in standard form AX+BY=C
(3/5,4/10) and (-1/5,7/10)


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Most Helpful Girl

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    • Awe ^_^ thanks yeah it does but how did you get -3/8 as the slope when you took -4/5-3/8? because the denominator between the -4/5 is different than the -8/10

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    • No prob! I know the picture is blurry, so it's kinda hard to tell. If ya got anymore questions, just ask (: I love math xD

    • Okay XD I think I will be good though ^_^

Most Helpful Guy

  • Those r coordinates. Use them to find slope. Then u can find the equation 4 da line.

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    • yeah I can do that but when i do it and look in the back of the book i get the wrong answer and I am doing a step wrong I am supposed to do y2-y1 over x2-x1 first but then the denominators and when I put them together aren't the same

    • 1. Find slope
      2. Use slope in point slope form
      3. Plug in one of the coordinates for x1 and y1
      4. Rearrange

      3/10 * -5/4 = -3/8
      Y-4/10 = -3/8(x - 3/5)

      Distribute and rearrange. I'm too lazy.

What Girls Said 2

What Guys Said 2

  • You first need to find the slope... m= (7/10 - 4/10)/(-1/5-3/5) ... M= -15/40 = -3/8

    y-y1 = m (x-x1)

    y- (4/10) = -3/8 (x - 3/5)

    y - (4/10) = -3x/8 + 9/40

    (3/8) x + y = 9/40 - 16/40
    (3/8) x + y = -5/40
    (3/8) x + y = -1/8
    3x + 8y = -1 <--------- I think this is it, if I made a mistake, it won't matter because you got the idea, all you have to do is find the slope.

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  • huh didn't get it... u r lookin for x and y?

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