Hey there! Sign in to join this conversationNew here? Join for free

Please help me with this rather large C1 Geometry Question. I'm going crazy. Watch

    • Thread Starter
    Offline

    8
    ReputationRep:
    Question:
    Name:  IMG_20170114_223920.jpg
Views: 23
Size:  500.1 KB
    For part A) I subbed in x=-3 and x=1 into the equation to find the y values, giving me y=-18 and y=18

    However, I don't know how on earth I would go on from there for part A to answer the question. Please could you help me and explain what to do and why?

    For part B, I guess it would because they have the same gradient, but please could you help me with what to do for that one?

    And just explain how to do c, d, e if you could please, but im mainly focusing on parts A and B atm.

    Thanks a lot, I appreciate it. This question has got me so stressed.
    Offline

    19
    ReputationRep:
    Actuallt hate C1
    • Community Assistant
    • Welcome Squad
    Offline

    20
    ReputationRep:
    (Original post by blobbybill)
    ...
    Part A - you have 2 points. Construct a line equation going through both of them by taking the gradient between the two points use one of the points for y-y_1=m(x-x_1)

    Part B - differentiate the function and show that y'(-3)=y'(1)

    Part C - just calculate the distance PR using Pythagoras' Theorem.

    Part D - same approach as in C.

    Part E - well you can explain the reason using the information given right before part C then find the area by doing \frac{1}{2}(PQ)(QR)
    Offline

    3
    ReputationRep:
    a) use (y-y1/x-x1) to find gradient
    P(-3,-18) Q(1,18)
    so gradient=(-18-18/-3-1)=9
    using y-y1=m(x-x1)
    y-18=9(x-1)
    y=9x+9
 
 
 
  • See more of what you like on The Student Room

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

  • Poll
    What newspaper do you read/prefer?
    Useful resources

    Make your revision easier

    Maths

    Maths Forum posting guidelines

    Not sure where to post? Read the updated guidelines here

    Equations

    How to use LaTex

    Writing equations the easy way

    Student revising

    Study habits of A* students

    Top tips from students who have already aced their exams

    Study Planner

    Create your own Study Planner

    Never miss a deadline again

    Polling station sign

    Thinking about a maths degree?

    Chat with other maths applicants

    Can you help? Study help unanswered threads

    Groups associated with this forum:

    View associated groups
  • See more of what you like on The Student Room

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

  • The Student Room, Get Revising and Marked by Teachers are trading names of The Student Room Group Ltd.

    Register Number: 04666380 (England and Wales), VAT No. 806 8067 22 Registered Office: International House, Queens Road, Brighton, BN1 3XE

    Quick reply
    Reputation gems: You get these gems as you gain rep from other members for making good contributions and giving helpful advice.