u dont have 2

@BunkerHermit You sure? I’m taking geometry this year and Algbera 2 next year, so it is sort of a helpful to me to rewiew it. Unless you have the answer, but I don’t mind is what I’m saying

its fine im just doin some review

i just forgot

im in 8th grade so i needed to review this stuff bc they r teaching it and i forgot but im teaching myself calculus so it was a win win because i forgot some stuff

@BunkerHermit Ok! Just one thing about functions- the best way to tell if something is a function is by graphing it and seeing if it passes the vertical line test- if you can draw a vertical line on the graph without it going through two points, since that would mean x has two y values. Let me send just one picture because I’m a little excited (I forgot this). Also I’m in eighth grade too so cool

yea ik

thx for da advice tho

Oh ok lol 😂 I’m just glad I learned something from algebra. That class was... not my favorite

I sent the image so then if anyone else needs it they have it btw since it’s a handy little trick

To tel if it is a function or not, just see if there are 2 points where the x is the same but the y is different

Vertical line test

That is not a vertical line.

That is a straight line with a slope of 0.

Haha <:thinking:726878987837636698>

If slope is 0. Then it's horizontal <:thinking:726878987837636698>

isn't the slope 0 when it's horixontial and undefined if it's vertical

@2Lazy2BeOriginal Yes. I actually forgot that so I’m glad this became a discussion lol.

I mean when the hell are you gonna use that?

That’s me alllll the time in school

That is linear I think

It’s y=5

Linear is like a straight line

Wait nvm idk I’d it is

If

the slope is 0 because it's horzontial

Linear

You're right

Linear if y can be expressed as a simple multiple of x plus some constant. In this case it's 0*x + 5

Yes

Y=mx+b if x = 0 and b = 5

that simplifys to y = 5

Exacrly

idk how to use algebra to prove a vertical line though

@2Lazy2BeOriginal I it is because you can’t calculate m (the slope) so it all gets screwed up. If you have to prove it, then you would use that formula that calculates slope, y2 - y1 over x2 - x1. Then it’ll always end up as some y value over zero, since the x values are equivalent to each other and when subtracted will always make zero, and any number over zero is undefined since you cannot divide by zero.

yeah other than doing dividing by 0

But idk how you can get to the conclusion x = 5 for example using slope intercept

Idk if this is what you needed or if this was your question, but if you have two points on a line, you can use the slope formula (y2 - y1 over x2 - x1) to find the slope. So if you have two points you can do that.

If you’re given a graph, you can count between two points using rise over run though I know graphs aren’t always given. Also Idk if this even answers your question lol. I might’ve misunderstood

it doesn't but dont bother. I already know to find a slope on linear

That’s good, wish I could’ve been more helpful. Good luck! @ me if you need anything because I might have an answer (possibly, lol).