Question 11

(a) Copy and complete the table of values for \(y = 2x^{2} + x - 10\) for \(-5 \leq x \leq 4\).

x -5 -4 -3 -2 -1 0 1 2 3 4
y     5   -9 -10   0    

(b) Using scales of 2cm to 1 unit on the x- axis and 2cm to 5 units on the y- axis, Draw the graph of \(y = 2x^{2} + x - 10\) for \(-5 \leq x \leq 4\).

(c) Use the graph to find the solution of :

(i) \(2x^{2} + x = 10\)

(ii) \(2x^{2} + x - 10 = 2x\)

Theory

Question details

Exam body
WAEC
Subject
Mathematics
Year
2018
Question no.
#11
Type
Theory

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