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Mathematics 14 Online
zarkam21:

Is this right?

zarkam21:

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zarkam21:

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Vocaloid:

yeah those are fine

Vocaloid:

just be sure to label the foci and the vertices on the graph (also I forgot to mention that on the ellipse graph whoops, the foci need to be there too)

zarkam21:

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Vocaloid:

be careful since the axis goes by units of 2 not 1

Vocaloid:

|dw:1519274145699:dw|

Vocaloid:

|dw:1519274157215:dw|

zarkam21:

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Vocaloid:

the focii are (2,2) and (2,-8)

Vocaloid:

also you need to re-adjust your hyperbola, they need to be aligned so that the focii are on the line of symmetry

Vocaloid:

|dw:1519274367577:dw|

zarkam21:

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Vocaloid:

the focii should be on a straight vertical line, yours are crooked

Vocaloid:

|dw:1519274419507:dw|

Vocaloid:

|dw:1519274425550:dw|

zarkam21:

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Vocaloid:

you need to move your second focus down, it's on -6 right now when it should be on -8

zarkam21:

okay did that

Vocaloid:

good, now you need to re-draw your hyperbola so that they're symmetric on the line x = 2, currently they're mis-aligned

Vocaloid:

keep in mind your vertices are (2,0) and (2,-6) so the hyperbola should cross these two points and be symmetric as possible

zarkam21:

1 attachment
Vocaloid:

keep in mind the tick marks on the axes represent 2 not 1

Vocaloid:

the hyperbola should be aligned with the foci, the focal line should "split" the hyperbola in half

Vocaloid:

|dw:1519274750221:dw|

Vocaloid:

|dw:1519274756480:dw|

Vocaloid:

1. start by plotting the vertices (2,0) and (2,-6) 2. then draw the hyperbola so that x = 2 is the dividing line that makes the hyperbola symmetrical

zarkam21:

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Vocaloid:

draw a line at x = 2 does the line divide the hyperbola in two mirror images? if not, then re-draw the hyperbola

Vocaloid:

|dw:1519274937239:dw|

Vocaloid:

|dw:1519274960919:dw|

zarkam21:

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zarkam21:

oh is this better for it to divide

Vocaloid:

|dw:1519275060123:dw|

Vocaloid:

|dw:1519275065075:dw|

Vocaloid:

the line needs to make the hyperbola divided into two ~equal~ ~symmetric~ ~halves~

Vocaloid:

|dw:1519275112970:dw|

Vocaloid:

think of the line x= 2 as a mirror - both halves of the mirror need to be the same

zarkam21:

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zarkam21:

Yeah i understand what you are saying i dont want you to think i dont understand what you are syaing

Vocaloid:

|dw:1519275206125:dw|

Vocaloid:

|dw:1519275212516:dw|

Vocaloid:

|dw:1519275220932:dw|

zarkam21:

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zarkam21:

Sure

Vocaloid:

much better, just need to move that second focus down because it's at -6 right now when it needs to be -8

Vocaloid:

|dw:1519275390478:dw|

zarkam21:

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Vocaloid:

|dw:1519275396743:dw|

Vocaloid:

the hyperbola position stays the same

Vocaloid:

the blue dots should not be touching the line

zarkam21:

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Vocaloid:

there we go

zarkam21:

oh thank god whew

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