Mick, I want to tell you that YOU HAVE FOUND THE GAP IN THE MARKET !! your video ideas and tone also manner motivated and gave hope to me and thousands of others. Thanks mick
i feel like college board's explanations (especially for the hard questions) are purposely hard to follow and its super easy for me to get extremely frustrated, extremely fast. i hope you know how helpful your channel is! just earned a new sub 😊
Graphical interpretation of sliding 6p: 6p is the y intercept of the parabola. So as you slide p in desmos, the parabola is just going up and down. It won’t affect the sum of solutions, as the sum of solutions is tied to the vertex V(h). However, it will affect the actual value of the solutions which are located at the x axis, which we know as 2 and 6. For an upward parabola, the separation between 2 and 6 widens as p becomes more negative, and vice versa. So there is a way to guess and check, but you have to be in the vicinity. On the other hand, if you understand the concepts, you do not need to use desmos. You may still use desmos as a verification tool. Graphical interpretation of sliding b coefficient If p is attached to coefficient b (standard form), you would be sliding the parabola left and right. In this case, both the sum and actual values of solutions are affected. Sliding the “a” coefficient would affect the opening and direction of the parabola.
Thanks for this explanation - much more clear than another one I saw. This is a crazy question. How can anyone do it in a reasonable time? And has the sum= -b/a ever been necessary to know for the SAT before? I don't recall needing it in the past.
The sum of solutions formula has become quite common on the SAT over the years. It would occasionally show up on the last iteration of the test, but it’s useful on a number of questions for the digital exam. Honestly, some people will look at this and know exactly what to do right away. I’m not one of them, so I need the boost from Desmos!
@@SetteleTutoring Funny, I don't remember ever using it before. In fact, I didn't know it. (Since I'm not a mathy person, I tend to only learn the critical stuff I need. lol) I'll remember it for the future since u have seen it on other occasions too.
I don’t think so. It’s complicated, but those were the two new questions that they College Board recently updated. They took the place of “experimental” questions that didn’t count on the old version. They don’t count on this one either, but you’d never know that for sure on a real exam. Big picture, it can happen that you get a question or two wrong and still get an 800. Just try your best to maximize correct answers.
I mean, what I thought, for the third equation, was very confusing. If you solve the third factor: (2x^2-16x+6p=0), you will get x= + or - (8x-3p)^1/2; I ignored it just like we ignored the first factor: (5x^2-45). I want to ask why it was a bad idea to ignore the solutions of third factor. It went against my intuition, and I ignored it because when you add - (8x-3p)^1/2 & + (8x-3p)^1/2 you will get zero.
Mick,
I want to tell you that YOU HAVE FOUND THE GAP IN THE MARKET !!
your video ideas and tone also manner motivated and gave hope to me and thousands of others.
Thanks mick
I’m so glad you think so! Just trying to give honest, thorough SAT prep. I guess it’s working! Also, my name is Mike.
i feel like college board's explanations (especially for the hard questions) are purposely hard to follow and its super easy for me to get extremely frustrated, extremely fast. i hope you know how helpful your channel is! just earned a new sub 😊
So glad I can help, and thank you for the sub!
Wow! I struggled with this question, but your explanation is amazing and much more coherent that CollegeBoard’s “method.”
Thank you! I agree that the CB explanations are a mess. Even I barely understand them sometimes.
Thank you so so much i was losing braincells reading college board's trash explanation 💀 they need to fire whoever made it fr fr
They never explain things with strategies, so the math ones are extremely complex sometimes. Glad I could make it easier!
Graphical interpretation of sliding 6p:
6p is the y intercept of the parabola. So as you slide p in desmos, the parabola is just going up and down. It won’t affect the sum of solutions, as the sum of solutions is tied to the vertex V(h). However, it will affect the actual value of the solutions which are located at the x axis, which we know as 2 and 6. For an upward parabola, the separation between 2 and 6 widens as p becomes more negative, and vice versa. So there is a way to guess and check, but you have to be in the vicinity. On the other hand, if you understand the concepts, you do not need to use desmos. You may still use desmos as a verification tool.
Graphical interpretation of sliding b coefficient
If p is attached to coefficient b (standard form), you would be sliding the parabola left and right. In this case, both the sum and actual values of solutions are affected.
Sliding the “a” coefficient would affect the opening and direction of the parabola.
Thanks for this explanation - much more clear than another one I saw. This is a crazy question. How can anyone do it in a reasonable time? And has the sum= -b/a ever been necessary to know for the SAT before? I don't recall needing it in the past.
The sum of solutions formula has become quite common on the SAT over the years. It would occasionally show up on the last iteration of the test, but it’s useful on a number of questions for the digital exam. Honestly, some people will look at this and know exactly what to do right away. I’m not one of them, so I need the boost from Desmos!
@@SetteleTutoring Funny, I don't remember ever using it before. In fact, I didn't know it. (Since I'm not a mathy person, I tend to only learn the critical stuff I need. lol) I'll remember it for the future since u have seen it on other occasions too.
I got this and #8(similar triangle) one on this module wrong but still got an 800. Would that be accurate on the real test?
I don’t think so. It’s complicated, but those were the two new questions that they College Board recently updated. They took the place of “experimental” questions that didn’t count on the old version. They don’t count on this one either, but you’d never know that for sure on a real exam. Big picture, it can happen that you get a question or two wrong and still get an 800. Just try your best to maximize correct answers.
I mean, what I thought, for the third equation, was very confusing.
If you solve the third factor: (2x^2-16x+6p=0), you will get x= + or - (8x-3p)^1/2; I ignored it just like we ignored the first factor: (5x^2-45). I want to ask why it was a bad idea to ignore the solutions of third factor. It went against my intuition, and I ignored it because when you add - (8x-3p)^1/2 & + (8x-3p)^1/2 you will get zero.
I’m not sure where you’re getting the (8x-3p)^1/2. Where is the square root coming from?