Question

help plz

Answer 1

Below are two different functions, f(x) and g(x). What can be determined about their y-intercepts?


f(x) = x + 4
x g(x)
−1 8
1 0
2 −4


The function f(x) has a higher y-intercept.
The function g(x) has a higher y-intercept.
They both have the same y-intercept.
The relationship between y-intercepts cannot be determined.

Answer 2

g(x) is same as y so first of all find y-intercept of de table

Answer 3

y=mx+b is a slope intercept form
where m is slope and b is y-intercept
f(x)=x+4 <----what is the y-intercept in this equation ?

Answer 4

4

Answer 5

yes right and what's the y-intercept of table ?

Answer 6

the*

Answer 7

there is 0, 8, and -4

Answer 8

brb please i have to go help my mom out

Answer 9

nope 0 ,8 and -4 are y values not y-intercept
first of all you have to find slope of the table and then y-intercept

Answer 10

alright :-)

Answer 11

i meant \[\frac{ 8 }{ 2 } = \frac{ 4 }{ 1 }\\= 4\]

Answer 12

formula is \[\huge\rm \frac{ y_2 - y_1 }{ x_2 - x_1 }\]plug in x and y values
u forgot something .-.

Answer 13

\[0 - 8 = -8 and 1 - (-1) = 2\] so we got -4 because \[- \frac{ 8 }{ 2 } = -4\]

Answer 14

yes right

Answer 15

now what?

Answer 16

now y = mx + b replace m by -4 plug in x and y values solve for b

Answer 17

okay so y = -4x +b

8 = -4(-1) + b

8 = 4 + b

-4 - 4

4 = b

b = 4

Answer 18

yes right that's the y-=intercept of the table

Answer 19

so its C because they both have the same y-intercept

Answer 20

yep right

Answer 21

can you help me with more because your so good at getting me to understand it and doing it myself :)

Answer 22

ill post them in a new thread so you can get more medals

Answer 23

i'll try
and u can post here :-)

Answer 24

okay

Answer 25

Alton has been recording the number of apples on his apple tree each week:


Week Apples
2 15
3 22
4 29
5 36


The function representing Alton's apples per week is f(w) = 7w + 1. What does the 1 represent?
The number of apples at the start
The week number when Alton recorded the apples
The number of apples Alton had in total
The number the apples increased by each week

Answer 26

any idea ?

Answer 27

let me read it again

Answer 28

alright

Answer 29

the y - intercept right because you said b = y-intercept or it means y intercept

Answer 30

yep one is the y-intercept
so what would be ur answer ?

Answer 31

the numbers of apples at the start

Answer 32

yes right bec when u substitute 0 for w
f(0)=7(0) + 1 you will get one
so y-intercept is also the starting point

Answer 33

okay thnx i have a coup[le more

Answer 34

okay

Answer 35

Im gonna try to solve the next one on my own and you tell me if its right or wrong but this is the question

Answer 36

On the graph of the equation 8x − 3y = 24, what is the value of the y-intercept?

−8
8
−3
3

Answer 37

8x - 3y = 24
-8x - 8x

-3y = -8x + 24
/-3 /-3

y = -8x -8

so is the y - intercept -8

Answer 38

alright that's right y-intercept is -8
but slope is not -8
divide both side by -3\[\frac{ -3y }{ -3} = \frac{ -8x+24 }{ -3 } = \frac{ -8x }{ -3 } +\frac{ 24 }{ -3}\]

Answer 39

-8x+24 OVER -3

Answer 40

oh okay so its like this \[\frac{ -8x + 24 }{ -3 }\]

Answer 41

yes right
-8x is dividing by -3 and 24/-3

Answer 42

okay but is the answer -8?

Answer 43

for the y-intercept?

Answer 44

so how would you write equation in slope yintercept form ?

Answer 45

\[y = \frac{ -8 }{ 3 }x - 8\]

Answer 46

yes right!

Answer 47

yay

Answer 48

Based on the table of values below, find the slope between points where x = 3 and where x = 7.


x y
3 1
4 6
7 9

−4
\[\frac{ 1 }{ 4 }\]
1

2 <--- my choice

Answer 49

how did you get -4 and 1/4 ?

Answer 50

ohh wait those are the choices alright
how did you get 2 ?

Answer 51

-4 , 1/4, 1, 2 are my answer choices

Answer 52

so i did \[\frac{ 9 - 1}{ 7-3 } = \frac{ 8 }{ 4 }\] = 2

Answer 53

yes right

Answer 54

okay lol good i thought i did it wrong lol

Answer 55

After 3 months of living at his new house, Tony had 4 birds. Four months later, Tony still had 4 birds. Which of the graphs below models Tony's bird population?

graph of line going through 4, 0 and 4, 8
graph of line going through 0, 4 and 7, 4 <- my choice
graph of line going through 1, 5 and 4, 8
graph of line going through 4, 0 and 7, 3

Answer 56

let me know if you want the picture of the graphs

Answer 57

i have to go make a new post
and yes we need graph

Answer 58

okay