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Mathematics 7 Online
cookiemonster:

ALGEBRAAA HELP ASAP! 1. Which number on this set represents the domain? (3,4) (5,6) (9,12) (13,141)

cookiemonster:

@Vocaloid PLEASE HELP

cookiemonster:

@Arcadiouse

cookiemonster:

@LootAtTheTime

cookiemonster:

@Falconmaster @Felicity96 @JustSaiyan @Elsa213

cookiemonster:

and please try to answer fast guys

Arcadiouse:

Loot, you have to help them get to the answer...

LootAtTheTime:

I do ;l

Arcadiouse:

Domains are the x values of a function.

Arcadiouse:

So in this case, loot is correct.

LootAtTheTime:

should I repost?? q.q

cookiemonster:

whats the answerrRR??????????????

Arcadiouse:

All the X values, so 3, 5, and so forth

Arcadiouse:

Look at the (x,y) on those pairs, the X's are the domains.

LootAtTheTime:

^

LootAtTheTime:

Y's are the range.

LootAtTheTime:

Did you figure it out?

cookiemonster:

faster guys please im timed

LootAtTheTime:

The domain is the x values

Arcadiouse:

Range is the Y values.

cookiemonster:

but out of those sets, which set represents the domain?

LootAtTheTime:

you used all of the x vauluse from each of those pairs to represent the domain

cookiemonster:

so 3,5,9, and 13 are the domains of the set?

Arcadiouse:

Correct!

LootAtTheTime:

Nice!

Arcadiouse:

Good job.

cookiemonster:

next... What is the equation of the horizontal line that passes through (4,5)

cookiemonster:

is it y=5???

Arcadiouse:

Yes, I calculated 5 also.

cookiemonster:

Given that h(x) = 2x - 12, find the value of x that makes h(x) = 8

Arcadiouse:

Ok, so, do you have any clue how to do this?

cookiemonster:

no

cookiemonster:

but answer fast im timed

Arcadiouse:

X = 10 because 2x -12. 2 x 10 = 20 - 12 = 8

cookiemonster:

ok so then?

Arcadiouse:

ok, why would x have two different values in this equation.

cookiemonster:

umm not sure

Arcadiouse:

It doesnt, for h(x) to equal 8, the equation x has to be set to 10, so H(10)...

cookiemonster:

ok.....

cookiemonster:

ok great next

Arcadiouse:

Ok.

cookiemonster:

What is slope? Describe and give the formula. How do you find the slope on a graph.

Arcadiouse:

m = (y2 -- y1) / (x2 -- x1)

Arcadiouse:

Kinda hard to define, but slope is where the line crosses the y and or x axis, depending on what you use slope at. There are three types of slope, positive, negative and zero/no slope. Positive is slop that goes up, negative is down and zero is straight. |dw:1508175057033:dw|

person123:

slope is equivalent to the average rate of change. rise over run

cookiemonster:

ok i got it next

cookiemonster:

Write the equation of the line that passes through the points (2,-2) and (4,3).

person123:

you guys switch off answering or something LOL?

Arcadiouse:

Nope, literally just helping him.

Arcadiouse:

Can you do this one? Currently a bit busy?

cookiemonster:

idk

person123:

sure

person123:

3--2/4-2 5/-6

cookiemonster:

explain how to graph y=3/4 x-5

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