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Barrelracer17

  • one year ago

Indicate in standard form the equation of the line through the given points. P(0, -4), Q(5, 1)

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  1. Barrelracer17
    • one year ago
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    @MMMercado can you help me please

  2. radar
    • one year ago
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    First develop the line equation in any form. then place it in the standard form which is: ax + by = c

  3. Barrelracer17
    • one year ago
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    do you first put it in point slope form?

  4. radar
    • one year ago
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    The two points given is all you need. Suggest you use the point-slope form to solve for the slope, the slope will become "a" in the standard form.

  5. radar
    • one year ago
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    Yes.

  6. radar
    • one year ago
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    I would go that way. point-slope form.

  7. Barrelracer17
    • one year ago
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    okay

  8. radar
    • one year ago
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    I will standby for further assistance (if needed).

  9. Barrelracer17
    • one year ago
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    i put it in point slope form just don't get how to put it in standard once i get it in point

  10. radar
    • one year ago
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    ok what did you get for slope (m) in the point slope form? (-4 - 1) = m(0 -5) -5 = -5m m = ?

  11. Barrelracer17
    • one year ago
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    1

  12. radar
    • one year ago
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    Correct, now use point slope again using the variables x and y and only one of the given points like this: (y-1) = m (x-5) I used the second point y-1 = 1(x-5) y-1 = x -5 placing in standard form first put the variables on the left side. -x + y -1 = -5 now put the numerical values on the right -x + y = -5 + 1 simplify. and you will be done.

  13. radar
    • one year ago
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    what does the final standard form look like?

  14. Barrelracer17
    • one year ago
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    So I just simplify it?

  15. radar
    • one year ago
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    Yes combine the numericals on the right side of the equal sign.

  16. Barrelracer17
    • one year ago
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    So that would equal 6... right?

  17. radar
    • one year ago
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    -x + y = -4 one answer or it could be expressed as: x - y = 4 by multiplying both sides by a -1.

  18. radar
    • one year ago
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    No. -5 + 1 would be a -4. Remember your rules for signs when adding or subtrtacting In this case you are adding a 1 to a -5.

  19. Barrelracer17
    • one year ago
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    Okay I got it now thank you so much plus my algebra teacher in summer school finally decided to help me

  20. radar
    • one year ago
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    Very good, I like the line equation expressed as x - y = 4 better simply because the coefficient of x is shown as a +1 which is also the value of the slope (+1).

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