Question

=

Answer 1

@phi

Answer 2

@Loser66 @cwrw238

Answer 3

Post the problem first, friend

Answer 4

The "perpendicular" idea got me all confused

Answer 5

First what is the slope of
2y = 3x - 1

(you have to put it into y = mx + b form, to find the slope (the m) )

Answer 6

Okay so to get rid of the "2" next to the y, we do
y=2/3-1

Answer 7

yup

Answer 8

Oh and 2/3 is like -2/3!

Answer 9

to get the perpendicular, flip and multiply by -1

Answer 10

Oh! So flipping 2/3 is 3/2

3/2*-1=-1.5

Answer 11

you started with
2y = 3x - 1
Then
***
Okay so to get rid of the "2" next to the y, we do
y=⅔ x -1
***

the slope of the original line is ⅔
you flip and multiply ⅔ by -1

so 3/2 * -1

so it looks like you got it.

Answer 12

Is -1.5 one of my answer options though?

Answer 13

although you should be more careful.
when you start with
2y = 3x - 1
you divide both sides by 2:
y = 3/2 x - ½ (notice you divide the -1 also)... it does not affect your answer, but you do want to do this correctly and not get into bad habits.

Answer 14

Oh okay! So, the end answer was -3?

Answer 15

oh wait.

2y = 3x - 1
you divide both sides by 2:
y = 3/2 x - ½

so the slope was 3/2

we flip 3/2 and multiply by -1 to get -⅔

Answer 16

Oh!!! That makes more sense to me! I was wondering how the answer turned negative. Thank you!

Answer 17

I just learned to never trust a pixie.

Answer 18

lol :D

Answer 19

that's a good lesson to learn lol :D

xD

Answer 20

Would you mind checking a few questions I did?

Answer 21

What are they?

Answer 22

The graph of a function must pass the ______________ line test.

I said vertical

Answer 23

yes

Answer 24

That is good.It's vertical line test for functions because for each x, there can only be one y.

Answer 25

It sounds like you know this. that is correct.

Answer 26

f(-3) = -3*-3 + -3

Answer 27

Oh I see so we have to plug in the -3 to all the x's?

Answer 28

yes, and then you simplify

Answer 29

Oh!!! That would be 6! That helps me on another problem too!! Thanks! :D

Answer 30

if you write it -3^2 you would get -9. But what you should *really* write
is (-3)^2 which means -3* -3, and you get +9

Answer 31

I feel like a bother

Answer 32

slope is change in y divided by change in x
if the "change in x" is 0, you end up with
(change in y)/0

and we are not allowed to divide by 0. So instead we say, slope is undefined.

if you plot a line where the x value stays the same, and y changes (this is when you get undefined slope), the line goes up/down.
it will have a constant x (which we show by saying x = whatever # it is)

Answer 33

Okay! So the x value in my problem is 4. So the 4 won't change. The only thing that's gonna change is the y=7?

Answer 34

Write the equation of the line

so all you say is x=4
that is the equation of a line that goes straight up/down, with x always 4

y=7 is also the equation of a line... you could think of it as y = 0x +7
a line with 0 slope, and a y-intercept of 7. It goes horizontal, with y always 7

Answer 35

So since the slope can only go up and down (in this question), we just focus on the x, which equals 4?

Answer 36

I would say because the slope is undefined we just focus on the x, which equals 4

which a long-winded way to say a vertical line has the equation x= some # (4 in this case)

Answer 37

Okay!! So I'm putting x=4 as my answer for that one! Thank you so much for your help! I may have another question later, but that's it for now :)

Answer 38

Yeah its 0