The graph is shown is correctly represented by - JAMB Mathematics 2013 Question
A
y = x2 - x - 2
B
y = x2 - 3x + 2
C
y = x2 - x - 1
D
y = x2 + x - 2
correct option: a
The graph crosses the x-axis at x = -1 and x = 2
Thus, x + 1 = 0 and x - 2 = 0
x2 - 2x + x - 2 = 0
x2 - x - 2 = 0
giving y = x2 - x - 2
Thus, x + 1 = 0 and x - 2 = 0
x2 - 2x + x - 2 = 0
x2 - x - 2 = 0
giving y = x2 - x - 2
Please share this, thanks:
Add your answer
No responses