Equation of a tanget (1 Viewer)

[BlueGas]

When I'm finalizing my answer, which form do I leave the equation in? Either one of the pictures?

 

[DatAtarLyfe]

Depends what the question asks, they could say gradient-intercept form or general form. However, if you're gonna leave it in general form, the AX term has to be positive, so your first picture is correct

 

[BlueGas]

Depends what the question asks, they could say gradient-intercept form or general form. However, if you're gonna leave it in general form, the AX term has to be positive, so your first picture is correct

Every question I've come across just says find the equation of the tangent.

 

[Flop21]

I would say either. But I'm wondering the same thing. Do we leave it in the gradient-intercept form, or general form?

When I look at the answers they'll sometimes do general form... then other times leave it gradient-intercept form.

 

[DatAtarLyfe]

i generally leave it in gradient-intercept form cause generally the next parts require me to simultaneous it with another equation.
Do whatever is better for you (if the question doesn't specify) but make sure the AX value is positive (if in general form)

 

[Sien]

I'm pree sure either's fine but like dal said, I would also leave it in gradient intercept form

Sent from my D6503 using Tapatalk

 

[BlueGas]

Guys I need a straight forward answer, I'm so frustrated always seeing my equation different to the one from the sample answers even though I know the way I done the equation is right, what do I do? I see questions with "y + x + a = 0" and other questions with just "y = x + a". Will the marks make you lose marks if you put the different equation?

 

[keepLooking]

Guys I need a straight forward answer, I'm so frustrated always seeing my equation different to the one from the sample answers even though I know the way I done the equation is right, what do I do? I see questions with "y + x + a = 0" and other questions with just "y = x + a". Will the marks make you lose marks if you put the different equation?

No, you won't lose marks for whatever form you put it in.

I tend to put them in gradient-intercept for most equations.

 

[leehuan]

The most commonly accepted forms are the two you should always leave it in. It's up to you which you choose. If you need someone to choose for you, then always do y=mx+b. You do not get penalised if the sample answer has it in ax+by+c=0 unless they told you to!

ay+bx+c=0 is uncommon. Avoid it, unless the question specifically mentions that form.

The sample answers are called sample answers for a reason, not definitive answers.
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Or on a personal scale, I read ahead. If the question asks me to solve simultaneous equations (within the boundaries of 2U), I usually leave it in y=mx+b (point-gradient). Whereas if the question makes me use the perpendicular distance formula later, I usually leave it in ax+by+c=0 (general form).

 

[braintic]

Guys I need a straight forward answer, I'm so frustrated always seeing my equation different to the one from the sample answers even though I know the way I done the equation is right, what do I do? I see questions with "y + x + a = 0" and other questions with just "y = x + a". Will the marks make you lose marks if you put the different equation?

I hope you don't think those two particular examples are equivalent.

 

[BlueGas]

I hope you don't think those two particular examples are equivalent.

I don't really care if they're equal, you get what type of equations I'm trying to say.