Question

Which is always a correct conclusion about the quantities in the function y=x+8?
A. The variable x is always 8 more than y.
B. The variable y is always greater than x.
C. As the value of x increases,the value of y decreases.
D. When the value of x is negative, the value of y is also negative.

Answer 1

I think the answer is c

Answer 2

I would first eliminate the obvious two C and D

add 1 to 8 and y increases
make x= -1 and y is positive

Answer 3

not C

Answer 4

What's the slope of y=x+8 ?

Answer 5

X is the slope

Answer 6

go back to y = mx+b

m is the slope

Answer 7

example

y = 3x - 10 is in the form y = mx+b where

m = 3
b = -10

so the slope of y = 3x - 10 is m = 3

Answer 8

you can write y = x+8 as y =1x + 8

Answer 9

I still don't get it I've never been good in this subject

Answer 10

basically the slope is just the number in front of x (the coefficient of x)

Answer 11

it will visually tell you if the line is going up (increasing) or going down (decreasing) as you move from left to right

Answer 12

So it's 1x the slope

Answer 13

just 1, not 1x

Answer 14

1 is the slope

that's positive

so this line is increasing

Answer 15

Oh ok

Answer 16

The answer is A

Answer 17

let's say x = 1

what is y when x = 1 ?

Answer 18

Idk

Answer 19

use y =x+8 to find out

Answer 20

plug in x = 1 and evaluate

Answer 21

I don't have a calculator

Answer 22

all you're doing is replacing and adding

Answer 23

y = x+8

y = 1+8

y = ?

Answer 24

9

Answer 25

x = 1, y = 9

is "The variable x is always 8 more than y" true?

Answer 26

True

Answer 27

x = 1 is 8 more than y = 9 ?

Answer 28

The answer is a because it 8 more than y

Answer 29

1 is not 8 more than 9

if it was stated the other way around, then it would be true

Answer 30

It's b