Question

Algebra 1 Homework Help? Please?

Answer 1

I'm really bad at Algebra, and I need some help figuring out some problems. For example: y = 4/8x - 45

Answer 2

you're supposed to graph this don't you?

Answer 3

There's no graphs available for this question. No.

Answer 4

What he is saying is there is nothing to solve here

Answer 5

because it's in y=mx+b form

Answer 6

What are you trying to find?

Answer 7

Oh, my apologies.
That's suppose to be a 9, not an 8.
y = 4/9x - 45

But there's multiple choice for it, which is:
a. –5
b. 0.2
c. 5
d. –0.2

Answer 8

is there a question that goes along with this problem?

Answer 9

There's two of them, I was hoping to have an example of how to work it so I could attempt to figure out the second. But here:

Answer 10

Ah I see now. You see this is just an equation for a graph it really doesn't ask you to solve anything but when you show the question now I now what to solve for.

Answer 11

Ohh sorry i was confused since you didn't write parentheses like thisy = 4/(9x - 45)

Answer 12

So you know that the denomintaor can't be zero right? Never. because it doesn't exist so what would make the denominator zero?

Answer 13

By having a common denominator? I'm not sure, my teacher did a horrid job in trying to explain it to me, which is why I'm here, so I apologize if I am far off.

Answer 14

NO if you substituted a number for x. Which one would give you zero in the denominator?

Answer 15

you have to find something thhat makes the denominator zero, so ore example
y = 4/(9x - 45) it would be 5, since 9*5 is 45, so then 45-45=0

Answer 16

for*

Answer 17

Oh, okay! That makes perfect sense actually!

Answer 18

So you understand? Can you do the second one?

Answer 19

So, the second one would be 24?

Answer 20

-24

Answer 21

right -24

Answer 22

Where did the negative come from?

Answer 23

what's -24 *2

Answer 24

-48

Answer 25

and what's -48 +48

Answer 26

0

Answer 27

and that's why it's -24.

Answer 28

Oh, okay now I understand.
And I have another question I need assistance, this one does involve graphing.

Answer 29

ok not a problem

Answer 30

I'm not sure on how to work it (the rest of the answer selection is in picture 2 (named 3 by mistake)

Answer 31

ok this is pretty much the same deal. What number for x will give you a zero in the denominator?

Answer 32

2? I'm lost.

Answer 33

no the 2 isn't in the denominator at all. that -2 is just the y-intercept. just pay attention to this \[\frac{ 1 }{ x-4 }\] what number if you substitute it for x will give you zero on the bottom

Answer 34

Either a positive 4, or a 3?..

Answer 35

ok, well if you aren't sure go ahead and plug them in what is 4-4 and what is 3-4

Answer 36

4-4 = 0
3-4 = -1

Answer 37

And the reason I even brought up the three, is because my teacher said to always calculate the number on top with the one on the bottom, which, in fact, has not been working well.

Answer 38

that might come in handy later but we'll cross that bridge when we come to it

Answer 39

anyway now the question you need to ask yourself is whether the asymptote crosses at y=4 or x=4. Any ideas?

Answer 40

Possibly x=4?

Answer 41

yes that's correct. It's a vertical asymptote not a horizontal if it crossed at y=4 it would look something like this