# C1 (AS LEVEL/SOLOMON PAPER) Graph questionWatch

Thread starter 5 years ago
#1
Greetings,

I am revising for my maths exam at the moment and I struggle with what seems a simple graph question. The problem is that I don't understand why the graph consists of some connected straight lines and how to complete what is asked from me. I uploaded 2 pictures of the question, thanks indeed for help.
0
quote
reply
5 years ago
#2
Basically for part a) you need to draw y=1 with the graph and y=-x with the graph.
The number of solutions will be the number of intersection with the graph.

For part b) you will need to apply transformations to the graph separately.
0
quote
reply
Thread starter 5 years ago
#3
(Original post by Tynos)
Basically for part a) you need to draw y=1 with the graph and y=-x with the graph.
The number of solutions will be the number of intersection with the graph.

For part b) you will need to apply transformations to the graph separately.
y=1 intersects with the graph only once, however, in marking guide it is said that there are 3 solutions.

For part b what do you mean by transformation to the graph separately? I don't remember ever sketching something like this at lessons.
0
quote
reply
5 years ago
#4
Y=1 intersects three times, its a horizontal line at 1

Posted from TSR Mobile
0
quote
reply
Thread starter 5 years ago
#5
(Original post by HiImArt)
Y=1 intersects three times, its a horizontal line at 1

Posted from TSR Mobile
How does it intersect three times if it only crosses the y-axis once at 1? Sorry if my question seems stupid but I really have no clue and I want to fix that before exams.

0
quote
reply
5 years ago
#6
(Original post by Blackfyre)
y=1 intersects with the graph only once, however, in marking guide it is said that there are 3 solutions.

For part b what do you mean by transformation to the graph separately? I don't remember ever sketching something like this at lessons.
Ok go to 1 on the y axis, draw a straight line through it and see how many intersections you get.

You will have to learn the transformations, eg. inside the bracket affects the x axis outside the bracket affects the y axis.

Therefore y=f(x-2) Is a translation of 2 units in the positive direction.

y=f(2x) Is a Squash in the x axis of scale factor 1/2
0
quote
reply
X

Write a reply...
Reply
new posts

Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

see more

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.

### University open days

• University of Lincoln
Mini Open Day at the Brayford Campus Undergraduate
Wed, 19 Dec '18
• University of East Anglia
UEA Mini Open Day Undergraduate
Fri, 4 Jan '19
• Bournemouth University
Undergraduate Mini Open Day Undergraduate
Wed, 9 Jan '19

### Poll

Join the discussion

Yes (233)
27.51%
No (614)
72.49%

View All
Latest
My Feed

### Oops, nobody has postedin the last few hours.

Why not re-start the conversation?

### See more of what you like onThe Student Room

You can personalise what you see on TSR. Tell us a little about yourself to get started.