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question

  • 03-11-2004 4:54pm
    #1
    joe.
    Registered Users, Registered Users 2 Posts: 1,077 ✭✭✭


    (A) the temperature of a classroom increases by 0.25 C every minute. It, at start of class. the temperature is 7 C. write down a formula, mx + c to calculate the temperature at time x (mins) into the class

    (B0 Identify the slope(rate of change) and intercept(starting value) in the following linear functions
    (i) y = 3x + 6 (ii) y = -7x + 1

    (c) find the equations of the straight lines joining the following pairs of points

    (i)(0,0) and (7,21)
    (ii) (23,11) and (36,50)


Comments

  • #2
    M@lice
    Closed Accounts Posts: 296 ✭✭M@lice


    Just follow the formula's for coordinate geometry that should be in your text book to find out slope and how to construct the equations of lines when given two points and you should be fine.


  • #3
    Enygma
    Closed Accounts Posts: 1,651 ✭✭✭Enygma


    Wouldn't the first one be m = .25 and c = 7?


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