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2 marksSubstitution in Algebraic Expressions

CSEC Mathematics · May/June 2015 · Paper 2 · Question 4(a)

A table is designed to show values of x and y for the function y = x² - 2x – 3 for integer values of x from -2 to 4.

Complete the table for the function y = x² – 2x – 3.

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Other parts of this question

  1. 4(b)On the graph on page 13, plot the graph of y = x²-2x-3 using a scale of 2 cm to represent 1 unit on the x-axis and 1 cm to represent 1 unit on the y-axis.[4 marks]
  2. 4(c)On the graph on page 13, draw a smooth curve passing through the points on your graph.[1 mark]
  3. 4(d)(i)The values of x for which x²-2x-3 = 0 are ____________ and ____________[1 mark]
  4. 4(d)(ii)The minimum value of x² - 2x - 3 is ____________[1 mark]
  5. 4(d)(iii)The equation of the line of symmetry of the graph of y = x²-2x-3 is ____________[1 mark]

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