Question

Does -4 equal 2/3(-6) ? This is confusing me, help please

Answer 1

y=\[2\over3x\] Given points are (-6,-4)
Does -4 equal 2/3(-6) ?

Answer 2

Yes, do you have a scientific calculator? Put in 2/3*-6

Answer 3

wait... is that \[\huge y = \frac 2{3x}\]
or \[\huge y = \frac 23x\]

Answer 4

The first one.

Answer 5

@Susan, it's 4.

Answer 6

ahh so if you substitute \[\huge \frac{2}{3(-6)} \implies \frac 2{-18}\]
do you think this will equal -4?

Answer 7

i honestly did it on a normal one and got -5.3

Answer 8

sry got that first one wrong

Answer 9

what first one?

Answer 10

The first answer I got from calculator from doing what susan said. Nevermind that.

Answer 11

if you use a calculator... remember to do this \[\huge 2 \div (3 \times -6)\]
you will get a different answer if you do \[\huge 2 \div 3 \times -6\]

Answer 12

Can't you cancel though? 2 over 3(-6) ?
Cancel out 3 and -6 ? or.. no?

Answer 13

nope

Answer 14

lgba, enforcer of order of operations. Keep up the good work.

Answer 15

you cancel when you are dividing -6 and 3...but since you're multiplying them, you can't cancel

Answer 16

@SmoothMath just pointing out the pickiness of a calculator/wolframalpha

Answer 17

Oh okay.

Answer 18

Honestly Speaking I'm still kind of lost, I skipped the problem and i'm trying to get it again.. left the problem up for about 30mins but no one came here so i just completely ditched it.. sorry if im a little slow..

Answer 19

no worries. so where are you lost?

Answer 20

From 2 over -18. It's all asking me if it's equal to -4 (Apologies the - sign is sort of blurried off the page.

Answer 21

)* haha..

Answer 22

so you're confused if 2/-18 is equal to -4 or not?

Answer 23

yeah.

Answer 24

well you're allowed a calculator right? try inputting \(2 \div -18\) what do you get?

Answer 25

switch the numbers cause the number is wayy off... it's -9

Answer 26

why switch?

Answer 27

you can't switch just because it doesn't show the answer what you want.... what does the calculator say about \(2 \div -18\)?

Answer 28

because the answer comes out as -0.111...

Answer 29

or can it not be done?

Answer 30

that means 2/-18 is not equal to -4

Answer 31

so that means point (-6,-4) is not on the line

Answer 32

okay, can you help me with another similar one? these confuse me alot..

Answer 33

sure

Answer 34

if not thanks :P

Answer 35

kk thanks, sorry the message delayed there. uhm..

Answer 36

y= -1/4x ; (-8,2)

Answer 37

is that \[\huge y = -\frac 14x\]
or
\[\huge y = -\frac 1{4x}\]

Answer 38

the first one, sorry not good at using the equation thing yet lol

Answer 39

so what's your solution?

Answer 40

I got -32

Answer 41

Mainly because i noticed you crossed multiplied so i tried that but this is just getting me confused ..i guess i get lost because i get a little confused when i see the points given

Answer 42

i didn't cross multiply...when did i?

Answer 43

When i saw you got 2/-18

Answer 44

that was because your x was in the denominator. this time, x is in the numerator. so you do \[\huge -\frac 14 (-8) \implies -\frac { 1 \times 8}{4}\]
got it?

Answer 45

that should be \[\huge -\frac {1\times -8}4\]

Answer 46

i think youre getting confused lol, or is it me? x.x.. -1/4x
(the variable x) counts for all -1/4

Answer 47

you are confused

Answer 48

thought as much

Answer 49

if the x is in the middle, it's counted as multiplying x to the numerator

Answer 50

oh.. okay.

Answer 51

so now.. solve \[\huge \frac{-1 \times -8}4\]
what do you get?

Answer 52

by the way..that's another thing \[\huge -\frac 14 \implies \frac{-1}4\]

Answer 53

Alright. Well, as i was taught, -1x cant be subtracted from 8 because they're not like terms..?

Answer 54

that's not -1x...that's -1 times -8

Answer 55

then it's 8.

Answer 56

\[\huge \frac{-1x - 8}4\]
^that's -1x

Answer 57

-1 times -8 is 8 right. now divide it by 4

Answer 58

2

Answer 59

y=2 then it matches the given points.

Answer 60

right. so do you think (-8,2) is a point on the line?

Answer 61

Yes I do. I get it a lot more now..

Answer 62

right

Answer 63

thanks a lot for your help. you even taught me some haha

Answer 64

welcome