OCR C1 2009 June — Question 10

Exam BoardOCR
ModuleC1 (Core Mathematics 1)
Year2009
SessionJune
TopicQuadratic Functions

10
  1. Solve the equation \(9 x ^ { 2 } + 18 x - 7 = 0\).
  2. Find the coordinates of the stationary point on the curve \(y = 9 x ^ { 2 } + 18 x - 7\).
  3. Sketch the curve \(y = 9 x ^ { 2 } + 18 x - 7\), giving the coordinates of all intercepts with the axes.
  4. For what values of \(x\) does \(9 x ^ { 2 } + 18 x - 7\) increase as \(x\) increases?