7 years ago and this man still helps people, I finally understand linear functions!
@ashleyfox7451
7 жыл бұрын
Thank you so much! My algebra teacher isn't the greatest at explaining things so she generally sticks to textbook instructions. They really don't make sense to me but the way you explained all of this was perfect, thank you!!!!
@AstroK32
4 жыл бұрын
Ashley Fox same here
@aryasanthoshkumar3914
4 жыл бұрын
7 years later in 2020, I'm watching this video studying for the test out and I only have 2 months to study unlike my friends who have been studying for over 9 months. Thank you because you teach really well and quick so i can zoom through chapters really quickly and learn all the concepts.
@noahe6584
4 жыл бұрын
Oh my goodness this actually saved me
@Spydyr-dead
Жыл бұрын
thanks bro helped me pass the 111th grade
@rpr_fearYT
5 жыл бұрын
Thanks! This helped me with my homework!
@ratryox5667
3 жыл бұрын
math videos are really timeless
@hp793
2 жыл бұрын
Thank you! This was a very helpful explanation.
@nataliekollmorgen745
3 жыл бұрын
so much better than khan academy
@Theboardboy
Жыл бұрын
very VERY helpful for my homework....otherwise i was boutta be lost
@elizabethdiaz5670
3 жыл бұрын
THIS IS AMAZING thank you so much!
@randomfangirl6450
6 жыл бұрын
Very helpful for my exam tomorrow thanks a lot !
@shahdmohammed3736
2 жыл бұрын
kaa-chaan !!😂😂
@walkenisreal
6 жыл бұрын
Thank you now I understand the math
@whatthrfrickfracityfuck
3 жыл бұрын
thank yooooou this topic has me failing 8th grade rn it really helped
@banana_hunterxd588
2 ай бұрын
Saving lives before an exam
@blakeunderwood4857
4 жыл бұрын
Thank God, I have finals tmmr
@mcrwhore9706
4 жыл бұрын
Blake Underwood same its 1 am lol
@mr.hotdognoice3401
3 жыл бұрын
thx a lot , these videos help me a lot
@akshitha4643
6 жыл бұрын
Thank you! Very helpful
@Rhythmic0
3 жыл бұрын
Omg I actually understand thank god bc my exam is in an hour
@xaviersfinance2664
3 жыл бұрын
Hello, I have a test coming up, I still don't understand wat a transformation of a linear function is
@MartyBrandl
3 жыл бұрын
It's basically just a change in the slope or the y-intercept from the parent linear function f(x) = x
@xaviersfinance2664
3 жыл бұрын
@@MartyBrandl Thank you!
@sportsf.c4803
3 жыл бұрын
this was very hepful thanks
@jc.2591
3 жыл бұрын
Thanks im taking a test rn
@ashleypierce7187
4 жыл бұрын
Thank you so much!!
@lanigarcia1381
6 жыл бұрын
Thank you! This helped me SOO much!!
@yamiletgalindo2202
3 жыл бұрын
Thank you!
@tyrarollins1447
6 жыл бұрын
Very helpful
@temp9st
6 жыл бұрын
In our answers, when are we supposed to use the slope and steepness and when are we supposed to use y intercept?
@MartyBrandl
6 жыл бұрын
Mo Kai It depends on what the problem is asking for. Read carefully! :-)
@jaydonchua7230
4 жыл бұрын
Thank you! :)
@hexedhydra2554
3 жыл бұрын
how would you solve an equation that went something like g(x)=(3x+5)+8? I have a test coming up and I really need to know this, thanks! This video helped me with the rest of my homework, thank you!
@MartyBrandl
3 жыл бұрын
Tell me more about what the question is asking and I will see if I can help!? One tool that is great for figuring out transformations is Desmos.com. It's easy to put numbers in and take them out to see the effect they have on the graph. 👍
@hexedhydra2554
3 жыл бұрын
@@MartyBrandl sorry about that, of course. It’s asking how the graph of G (which I already told you) compares with the graph of F (which is [f(x)=3x+5]). I wanted to know, would I need to combine 8 and 5 to make 13? I wasn’t sure because 3x and 5 were in parentheses which usually means you have to combine them first. In equations like this am I supposed to ignore parentheses? (i probably should have elaborated more on the problem before i hit comment lol)
@MartyBrandl
3 жыл бұрын
@@hexedhydra2554 Ok, having the +8 outside the parentheses is actually kind of helpful! That's the only difference between the two functions and we can see the change by looking at the y-intercept. f has a y-intercept of 5 and g has a y-intercept of 13. What happened? It's moved up 8 units. I hope that helps! Keep working hard and asking great questions! 👍
@braxtonbryant5089
4 жыл бұрын
Dang, thanks bro 👊🏿
@mohamedgoda9677
5 жыл бұрын
Thank UUUUU
@cindywu3002
Жыл бұрын
Thank you, but how would you know if in a combined transformation linear equation the reflection is over y or x axis? In addition, how would you know if it is horizontal shrink or vertical stretch in an combined transformation?
@MartyBrandl
Жыл бұрын
That's a great question! It really depends on the original function you are transforming. If working with the parent linear function f(x) = x, a reflection over the x- or y-axis will yield the exact same result. If you start with something a little more complicated, say f(x) = 2x + 1, we notice that a vertical stretch maintains the x-intercept and "pulls" all the points away vertically. A horizontal stretch will maintain the y-intercept and "pull" all the points away in the horizontal direction. If you graph the following on Desmos (or your favorite graphing tool), you can see the differences. f(x) = 2x + 1 2 * f(x) ---> vertical stretch by factor of 2 f((1/2)x) ---> horizontal stretch by factor of 2 I hope that helps! 👍☺
@reesechen1623
3 жыл бұрын
For the second equation, shouldn't you explain that the graph was say vertically stretched by a factor of 1.5?
@MartyBrandl
3 жыл бұрын
If the original function had a y-intercept of 0 that would be true, but a vertical stretch on the f(x) would also change the y-intercept. The rotation idea isn't used a commonly as the vertical stretch though, so I can see where the confusion comes in. I hope that helps!?
@thesans9435
Жыл бұрын
So what happen if f(x)= 4x + 4 compared with f(x) = 4(x+4) ??
@MartyBrandl
Жыл бұрын
The + 4 without the parenthesis will move the graph up 4 units. The parenthesis added will move it graph 4 units to the left. Desmos is a great graphing tool that you can use to type in an equation in function notation and then type in the transformations to see how the graph changes! I hope that helps! Keep asking great questions! 👍
@brynnmarkham6799
2 жыл бұрын
Could possibly explain the equation f(x)=-x-2; g(x)=f(x+5) I don't know what I'm supposed to do with the 5 in the parenthesis at the end?
@MartyBrandl
2 жыл бұрын
They're using function notation...remember, whatever is inside the parenthesis is what we put into the function of that name for x. In your problem, the f(x + 5) means that we substitute x + 5 into the function named f everywhere we see an x. That gives us: g(x) = -(x + 5) - 2 From there we can simplify to get: g(x) = -x - 5 - 2 = -x -7 I hope that helps! Thanks for the question! Keep working and asking questions when you're not sure! 👍
@Pcollins1234
4 жыл бұрын
Helpful
@GG-rx4ef
6 жыл бұрын
Blessss
@qX00-1
2 жыл бұрын
Math can you give us a favour and solve your own problems
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