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# Maths help inverse functions. Watch

This question is doing my head in, and I keep getting answer choice E which is incorrect. I am getting the wrong function. Would apprecitate any advice.

Thanks.
2. I'm trying to self teach C3 over the summer so might be wrong, but I don't understand how it could be E?
If it was E the minimum point would be (-4,3) but clearly we have a positive x-coordinate? So it can't be that
I got C after the process of elimination

My reasoning:
It can't be A because it would cross the y-axis at (0,-1) which it doesn't look like it does
Not B as that would just be a parabola shifted 11 units
Not D as you would have a negative x coordinate for minimum but it looks positive
Not E because it has a negative x coordinate and it doesn't seem to be shifted 3 units up

So C
3. When are you going to use this in future life?
4. (Original post by Super199)
I'm trying to self teach C3 over the summer so might be wrong, but I don't understand how it could be E?
If it was E the minimum point would be (-4,3) but clearly we have a positive x-coordinate? So it can't be that
I got C after the process of elimination

My reasoning:
It can't be A because it would cross the y-axis at (0,-1) which it doesn't look like it does
Not B as that would just be a parabola shifted 11 units
Not D as you would have a negative x coordinate for minimum but it looks positive
Not E because it has a negative x coordinate and it doesn't seem to be shifted 3 units up

So C
See I ruled out A and B because choices C,D and E look more similar hence little difference will give the points.

The thing is I don't get is the equation is in terms of x and not y, does this affect anything. The inverse would mean that the circled point would be in either of the left quadrants so I assumed that from that it would be D or E - this is obviously wrong.

The question says that the graph represesnts the function f(x) and so surely the inverse cannot be the same as f(x) - perhaps this is my mistake.

(Original post by cdude)
When are you going to use this in future life?
I'm more concerned about getting these questions right for the test
5. (Original post by EmmaBxoxo)
See I ruled out A and B because choices C,D and E look more similar hence little difference will give the points.

The thing is I don't get is the equation is in terms of x and not y, does this affect anything. The inverse would mean that the circled point would be in either of the left quadrants so I assumed that from that it would be D or E - this is obviously wrong.

The question says that the graph represesnts the function f(x) and so surely the inverse cannot be the same as f(x) - perhaps this is my mistake.
Mm I'm not too sure, I only started doing this topic yesterday. But best of luck with your test
6. (Original post by cdude)
When are you going to use this in future life?
Are you dissing maths?
7. (Original post by rayquaza17)
Are you dissing maths?
Not 'dissing' it, no.

Just questioning why we get taught this stuff we're never going to use
8. (Original post by cdude)
Not 'dissing' it, no.

Just questioning why we get taught this stuff we're never going to use
I suppose everyone is entitled to their opinions.
9. (Original post by Super199)
Mm I'm not too sure, I only started doing this topic yesterday. But best of luck with your test

Thanks for your help, and thanks again

Only TSR revises during summer lmao, good luck with your core 3, I did that exam recently
10. (Original post by cdude)
Not 'dissing' it, no.

Just questioning why we get taught this stuff we're never going to use
someone sucks at maths
11. (Original post by Mike_123)
someone sucks at maths

No, i just put minimal effort in. I knew i would never use 80% of the stuff i learnt

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