Question

MEDAL!!!
Find the x- and y-intercepts for the graphs of the relationships in the problem.

Answer 1

@robtobey @jdoe0001

Answer 2

@dan815

Answer 3

an x value can have one y value only for it to be a function of only x

Answer 4

But how is that answering the question? @dan815

Answer 5

look at the pic you attached

Answer 6

How would I figure out the x- and y-intercepts ?

Answer 7

what is y when x=0,y-int
what is x when y=0, xint

Answer 8

So for like A, would it be:
y-intercept : (0,4)
x-intercept: (1,0)
?

Answer 9

x-intercept: (1,0) and (-1,0)

Answer 10

Oh yeah. Thanks. Can I go over with you for the other three as well?

Answer 11

okay

Answer 12

Give me a moment please.

Answer 13

I am confused on B.

Answer 14

This is a function, but it doesn't look like a linear function. I wish I knew the slope, and then figure out "b."

Answer 15

you work with the data only

Answer 16

what is y when x=0,y-int
what is x when y=0, xint

Answer 17

Oh.
y-int : (0,-3)
x-int : (19,0)

Answer 18

yes

Answer 19

C...

Answer 20

y-int : (0,10)
x-int : (4.0)

Answer 21

And then D...
y-int: (0,-1)
x-int : (1,0) and (-1,0)
?

Answer 22

C)
y-int : (0,10)
x-int : (4,0) and (-2,0)

Answer 23

Sorry missed the other. But thanks.

Answer 24

D is right

Answer 25

I have another question.

Answer 26

ok

Answer 27

Find the input for the following function with the given outputs. If there is no possible input for the given output, explain why not.

x = ?
\[f(x) = \sqrt{2x - 6}\]
\[\rightarrow f(x) = 10\]

Answer 28

d is correct

Answer 29

\[10=\sqrt{2x-6}\\
10^2=2x-6\\
10^2+6=2x\\
\frac{(10^2+6)}{2}=x\]

Answer 30

x=53

Answer 31

x = 53 ?

Answer 32

Okay. Thank you. And I just wanted to make sure my answers to two other questions.

Answer 33

So this one is the same thing as the one that we just did right now but the number is different:
x = ?
\[f(x)=3x - 7\]
\[\rightarrow f(x) = -1\]

My answer is:\[x = 2\]

Answer 34

3*2-7=-1

Answer 35

This one is with the four graphs/tables that I gave at first in the attachment.

Question: Which of the relationships are functions? If a relationship is not a function give a reason to support your conclusion.
Answer: Relationships B, C, and D are all functions because every input has only one output. However, for A, you can see that for an input, you have several outputs.

Answer 36

C is not a function

Answer 37

of x

Answer 38

So C is not a function?

Answer 39

@dan815