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
jamb 1992mathematics

The correct answer is A. 1, 0, -4

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- 4 + 0x - 4

a = 1, b = 0 and c = -4

Previous question Next question