OpenStudy (calculusxy):

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

2 years ago
OpenStudy (calculusxy):
2 years ago

OpenStudy (calculusxy):

@robtobey @jdoe0001

2 years ago
OpenStudy (calculusxy):

@dan815

2 years ago
OpenStudy (dan815):

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

2 years ago
OpenStudy (calculusxy):

But how is that answering the question? @dan815

2 years ago
OpenStudy (dan815):

look at the pic you attached

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (dan815):

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

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (dan815):

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

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (dan815):

okay

2 years ago
OpenStudy (calculusxy):

Give me a moment please.

2 years ago
OpenStudy (calculusxy):

I am confused on B.

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (dan815):

you work with the data only

2 years ago
OpenStudy (dan815):

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

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (dan815):

yes

2 years ago
OpenStudy (calculusxy):

C...

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (dan815):

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

2 years ago
OpenStudy (calculusxy):

Sorry missed the other. But thanks.

2 years ago
OpenStudy (dan815):

D is right

2 years ago
OpenStudy (calculusxy):

I have another question.

2 years ago
OpenStudy (dan815):

ok

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (anonymous):

d is correct

2 years ago
OpenStudy (dan815):

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

2 years ago
OpenStudy (dan815):

x=53

2 years ago
OpenStudy (calculusxy):

x = 53 ?

2 years ago
OpenStudy (calculusxy):

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

2 years ago
OpenStudy (calculusxy):

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:\[x = 2\]

2 years ago
OpenStudy (dan815):

3*2-7=-1

2 years ago
OpenStudy (calculusxy):

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.

2 years ago
OpenStudy (dan815):

C is not a function

2 years ago
OpenStudy (dan815):

of x

2 years ago
OpenStudy (calculusxy):

So C is not a function?

2 years ago
OpenStudy (calculusxy):

@dan815

2 years ago