Question

Hello open study people I was wondering if somebody could help me for well some time in math questions from 8th grade k12 :)

Answer 1

Choose the correct answer.
Determine whether the given has a positive slope, a negative slope, a zero slope, or an undefined slope.
https://static.k12.com/calms_media/media/213000_213500/213157/2/187f1c59866bfb925be32eadc01bb7b2ef3657e5/VHS_ALG_L2_S1_07_04_LQ1.gif
A.undefined slope
B.positive slope
C.negative slope
D.zero slope

Answer 2

@ganeshie8

Answer 3

A is what i think

Answer 4

Horizontal or in other words parallel to the x axis , Slope = 0
Vertical or in other words parallel to the y axis , Slope = undefined

Answer 5

yeah thx

Answer 6

Which describes the slope of this line?

https://static.k12.com/calms_media/media/1312500_1313000/1312636/1/b178d92bdc6205943ae2e5057d7f00724d0c718d/HS_A1G2_S1_07_04_ART4.jpg

A.undefined slope
B.zero slope
C.negative slope
D.positive slope

Answer 7

Re-check the last comment, undefnied.

Answer 8

i know but there was a Zero Slope so.......

Answer 9

What is the slope of the line passing through the points (1, –5) and (4, 1)?

Answer 10

\[A.2 B. -\frac{ 4 }{ 5 }C.\frac{ 4 }{ 5 }D.-2\]

Answer 11

it will not let me put spaces in between them

Answer 12

@ParthKohli

Answer 13

In the last question , to easily remember which is 0 / undefined use
y_2 - y_1/ x_2 - x_1 in case of the second line we have x as a number between 1, 2 assume it's 1.5
so y_2 - y_1/ 1.5 - 1.5 = y_2 - y_1/ 0 ( denominator is zero so undefined)
in case of horizontal line the y will be the same so 0/x_2 - x_1

Answer 14

What is A, B, C ,D ? matrices ?

Answer 15

are

Answer 16

wait so in number 2 the answer is undefined slope right?

Answer 17

For the slope of the line passing throught two points : \[(x_{1}, y_{1}) (x_{2}, y_{2}) \]
This formula is generally used : \[\frac{ y_{2} - y_{1} }{ x_{2} - x_{1} }\]

Answer 18

Yeah, I was explaining how I recall them easily.

Answer 19

"Re-check the last comment, undefnied."
I didn't mean I was mistaken , I meant I answered the question of yours pre-posting it.

Answer 20

great so number 3 the answer is..... hold on

Answer 21

i got 9?

Answer 22

er 0/9

Answer 23

(1, -5) ( 4, 1)

(1 - (-5)) / (4 - 1) = (1+5)/ 3 = 6/3 = 2

Answer 24

I'm sorry i just am not in the zone :'(

Answer 25

What is the slope of the line passing through the points (0, 4) and (−8, −1)?

Answer 26

@phi

Answer 27

-1 - 4/ -8 - 0 = -5/-8 = 5/8 , mate it's direct substitution

Answer 28

sorry

Answer 29

What is the slope of the line whose equation is 12 = 4x – 6y?

Answer 30

if i am annoying you, you do not have to help :/

Answer 31

phi can you help me?

Answer 32

***slope of the line whose equation is 12 = 4x – 6y?***

to find the slope, you want to make the equation look like
y = m x + b
(that is called slope-intercept form). Have you see this before?

Answer 33

yes

Answer 34

if you start with
12 = 4x -6y
and add 6y to both sides you get
6y+12 = 4x -6y + 6y

do you know how to simplify the right-hand side? i.e. what is -6y+6y ?

Answer 35

0

Answer 36

so then you have 6y+12=4x

Answer 37

yes. now add -12 to both sides

Answer 38

um i can't because then it would look like tis...... 67=4x+12

Answer 39

6y sorry

Answer 40

6y+12=4x
6y+12 - 12 = 4x -12
the 12-12 is 0 on the left
you get

6y= 4x-12

Answer 41

right

Answer 42

but i can't do 4x-12 because 12 does not have and x

Answer 43

you can add (or subtract) numbers from letters
4x-12 is OK
what you can't do is "simplify" that, the same way you could simplify 4x-12x


now divide both sides by 6
\[ \frac{6y}{6}= \frac{4x-12}{6} \\ y= \frac{4}{6}x - \frac{12}{6} \]

Answer 44

oh yeah i remember now wow thx so the answer is 2? but i can not put in 2

Answer 45

i have to put in....... oh wait it is a rid sorry yeah so 12/6 is the answer

Answer 46

grid*

Answer 47

if you simplify
\[ y= \frac{4}{6}x - \frac{12}{6} \]
you get
\[ y= \frac{2}{3} x -2\]
the slope is the number in front of the "x"

Answer 48

so the answer to the question is 2/3?

Answer 49

yes. once you have
y= m x + b
the m (number in front of the x) is the slope
and b is the "y-intercept"

Answer 50

great thx so 2/3 is the answer for number 5 thx a bunch can you help me more?

Answer 51

if you make a new post.

Answer 52

yes i will :)