The sketch is the curve of y = ax2 + bx + c. Find a, b and c respectively
-
A.
1, 0, -4 -
B.
-2, 2, -4 -
C.
0, 1, -4 -
D.
2, -2, -4 -
E.
2, -2, -4
Correct Answer: Option A
Explanation
Given the graph and the curve y = ax2 + bx + c the roots are x – 2 and 2 while its equation (x + 2)(x – 2) = y
y = x2 – 4 i.e. y = x2 + 0x – 4
a = 1, b = 0 and c = -4