SPM Practice 2 (Question 1 – 3)

Question 1:
Reduce non-linear relation,  y=p x n1 , where k and n are constants, to linear equation.  State the gradient and vertical intercept for the linear equation obtained.
[Note : Reduce No-linear function to linear function]

Solution:


 

Question 2:
The diagram shows a line of best fit by plotting a graph of  y 2 against  x .

  1. Find the equation of the line of best fit.
  2. Determine the value of
    1. x when y = 4,
    2. y when x = 25.
Solution:



 

Question 3:
The diagram shows part of the straight line graph obtained by plotting y against x 2 .

Express y in terms of x.

Solution:



 

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