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C1 - I have a lines intersection question and written solution, can you explain it? watch

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    (Original post by will'o'wisp)
    1) rearrange one of the equations lets say y=mx+c to mx-y+c=0
    if both equations are in the form ax²+by+c=0 rearrange one of them to become by= -(ax²+c) then y= \dfrac{-(ax^2 +c)}{b}

    2)same again rearrange them

    if one of equations are in the form ax²+by+c=0 rearrange one of them to become by= -(ax²+c) then y= \dfrac{-(ax^2 +c)}{b}

    3)sorry my mistake i should've clarified, it doesn't matter what it is. ax or ax² it's just a general form to show a way in which the equation can be rearranged.
    Oh, so you could use either method 1 or method 2 in any scenario as long as you rearrange them, but it is just way easier to use the one that is more suitable (so when you have two equations in different forms, use method 1, and use method 2 when you have two equations in the same form)? Am I right in thinking this?
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    (Original post by blobbybill)
    Oh, so you could use either method 1 or method 2 in any scenario as long as you rearrange them, but it is just way easier to use the one that is more suitable (so when you have two equations in different forms, use method 1, and use method 2 when you have two equations in the same form)? Am I right in thinking this?
    Spot on fam, you got it now
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    (Original post by will'o'wisp)
    Spot on fam, you got it now
    Thank you so much!!
 
 
 
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