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Competition - post a photo you've taken of nature >>
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Competition - post a photo you've taken of nature >>

C1 graph transformations

Hi I just wanted to clarify if I needed to work out the value of k in question 2b or just draw the graph shifting up by a value of k? Thanks for any help in advance :smile:
image.jpg
The second one
Reply 2
Avatar for KaylaB
KaylaB
20
You would just need to make the correct change to the graph, showing where it crosses the axis
It's saying, in any situation where you add a number at the end of the equation, what happens?
Reply 3
Avatar for Meggy moo 1
Meggy moo 1
OP
2
Original post by Mesosleepy
The second one


Okay thank you


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Reply 4
Avatar for Meggy moo 1
Meggy moo 1
OP
2
Original post by KaylaB
You would just need to make the correct change to the graph, showing where it crosses the axis
It's saying, in any situation where you add a number at the end of the equation, what happens?


Oh right that makes sense, okay thanks :smile:


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Reply 5
Avatar for B_9710
B_9710
18
There is no way you could work out a value for k in this question. It doesn't give you any more information so you just have to think about where the graph would cross the y-axis, since it does not cross the x-axis as k is a positive constant. You can just think about this graphically or you could work out the value for the discriminant in terms of k - which will show you that the discriminant is always less than 0 (as k is positive). So in this question all you are doing is finding the y intercept in terms of k - when x=0

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