Home » Classroom » JAMB Mathematics 2009 Question

Which of the following equations represent the ... - JAMB Mathematics 2009 Question

Which of the following equations represent the graph above?
A
y = 2+7x+4x2
B
y = 2-7x+4x2
C
y = 2+7x-4x2
D
y = 2-7x-4x2
correct option: d

x = -2 and x = 1/4

x = -2 and 4x = 1

x+2 and 4x-1

(x+2)(4x-1) = 0

4x2 - x + 8x -2 = 0

4x2 + 7x – 2 = 0 but y intercept is positive. Multiply the equation by -1

-4x2 - 7x + 2 = 0

∴y = 2 – 7x – 4x2

Please share this, thanks:

#JAMB #JAMB

Add your answer

Notice: Please post responsibly.

No responses