I Will Medal And Fan! I need explanation AND answer!
hold on.. let me put the graph up

- anonymous

I Will Medal And Fan! I need explanation AND answer!
hold on.. let me put the graph up

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- anonymous

|dw:1440015007670:dw|

- anonymous

don't judge, that took me ages

- Vocaloid

well, if our equation is y = x^3, then all we need to do is do a few quick calculations and draw a few points
if x = 0, then y = x^3 = ?

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## More answers

- anonymous

i don't get x ^ 3 = ? what is ^

- Vocaloid

^ means exponent
so y = x^3 = x*x*x

- Vocaloid

I presume that your equation looks like this?
|dw:1440016180277:dw|

- anonymous

it looks like |dw:1440016208739:dw|

- Vocaloid

oh, ok, then let's go with that
if x = 0, then y = 3x = ?

- anonymous

y = 3x is the part I don't get

- anonymous

3(0)

- Vocaloid

well, when we want to graph a point, we need (x,y), right?
y = 3x tells us how to find y when we have x

- Vocaloid

yes, y = 3(0) = 0 when x = 0
this gives us the point (0,0)

- Vocaloid

now, when x = 1, y = 3x = ?

- anonymous

3(1)

- Vocaloid

right, and 3(1) = 3, correct?
this gives us the point (1,3)

- Vocaloid

now, let's put (0,0) and (1,3) on your graph:

- Vocaloid

|dw:1440016450097:dw|

- Vocaloid

now we draw a straight line through the two points, and then we have our line.|dw:1440016477564:dw|

- Vocaloid

is that clear?

- anonymous

Not quite. sorry it took me awhile, my dogs were fighting

- Vocaloid

well, let's go from the top
do you understand how to graph points?

- Vocaloid

for example, if I told you to put the point (3,5) on a graph, could you do it?

- anonymous

yes

- Vocaloid

ok, you understand that every point has an x and y-coordinate, correct?
every point looks like this: (x,y) where x = a number and y = a number, with me so far?

- anonymous

yes

- Vocaloid

ok, now let's move on to turning an equation into a graph
the problem gives you the equation
y = 3x
which means that we can pick any number to be x, and get a matching y value by multiplying 3*x
so, if x = 0, then y = ?

- anonymous

0?

- anonymous

3(0)

- anonymous

@Vocaloid

- Vocaloid

right, y = 0 when x = 0
remember how we write a point? we can write x = 0 and y = 0 as (0,0) and graph this point

- Vocaloid

next, we can pick another x value, let's just go with x = 1 as an example
when x = 1, y = ?

- anonymous

@Vocaloid

- Vocaloid

yeah?

- Vocaloid

when x = 1, y = ?

- anonymous

idk why it did that. It glitched and sent it again >.<

- anonymous

3(1)

- Vocaloid

right, and 3 times 1 = ?

- anonymous

3*

- Vocaloid

right, so y = 3 when x = 1
we can write this as (1,3).
so we have two points now, (0,0) and (1,3). draw these two points on a graph, then draw a straight line through them, like so:

- Vocaloid

|dw:1440018952660:dw|

- anonymous

oh

- Vocaloid

does that make a bit more sense now?

- anonymous

Why those numbers?

- Vocaloid

@theforgottendogs
remember when we solved the equations?
x = 0, y = 0
x = 1, y = 3
and we made the two points (0,0) and (1,3)?

- Vocaloid

I just picked x = 0 and x = 1 because they were easy to calculate, you can pick any 2 x values you want

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