#### Question 4

The gradient of the interval pictured is:

 positive negative zero undefined

#### Question 5

 a b A line passes through the points (1, 2) and (5, 10). Its gradient is: $$\dfrac{1}{2}$$ 2 4 The gradient  of the line pictured is: −3 3 6

#### Question 6

The coordinates of the x-intercept of the graph pictured are:

 (0, 4) (−2, 0) (−2, 4)