Chapter 9

Question 1

How do you find the asymptotes from the equation y = 1/(x + a) + b?

Answer 1

• Vertical asymptote is x = -a
• Horizontal asymptote is y = b

Question 2

How do you find the centre of a circle on a graph from the equation
(x - a)² + (y - b)² = r²

Answer 2

Radius of r and centre (a,b)

Question 3

How do you find the y intercept of a cubic graph from a cubic equation?

Answer 3

Multiple all the solution e.g.
If the equation is y = (x -1)(x + 2)(x - 3)
The solutions would be -1 x 2 x -3 = 6