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Mathematics 7 Online
zarkam21:

Help please

zarkam21:

1 attachment
zarkam21:

@Vocaloid

zarkam21:

@Zepdrix

xXMarcelieXx:

whats the question

zarkam21:

I posted it

xXMarcelieXx:

well you know its a parabola so its going be negative since it is upside down

zarkam21:

so which points do I use

zarkam21:

@Vocaloid

zarkam21:

@Vocaloid

loveboy:

let's start with intercept first

loveboy:

to find y-intercept , you have to substitute x=0 and solve for y OR the point where the graph intersects the y axis is called as y intercept

loveboy:

so can you identify the point where the graph meets the y axis ?

zarkam21:

@563blackghost

563blackghost:

The intercepts are where the parabola meets the x-axis. The vertex is where the parabola starts from. The axis of symmetry is the x-value of the vertex.

zarkam21:

okay so intercepts would be (0,0)(-5,0) vertex (-1,-5)

563blackghost:

Intercepts are correct. The vertex is incorrect. It is where the parabola starts.

zarkam21:

okay so the vertex would be um

zarkam21:

@Vocaloid

Vocaloid:

|dw:1512696925207:dw|

Vocaloid:

|dw:1512696934006:dw|

Vocaloid:

^axis of symmetry and vertex

zarkam21:

(2,4.5)

Vocaloid:

should be (2.5,5) the y-axis isn't drawn well but each space is 1 unit

zarkam21:

so that would be the vertex and axis of symmetry?

Vocaloid:

axis is just x = 2.5 vertex is (2.5,5)

zarkam21:

Sounds good and my intercepts as (0,0,) (-5,0)

Vocaloid:

should be (5,0) not -5

Vocaloid:

make sure to specify: x intercepts: (0,0) and (5,0) y intercepts: (0,0)

zarkam21:

oh okay @563blackghost said it was right that's why i was getting a second opinion

zarkam21:

Perfect , thank you !

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