Consider the function y = x² − 2.

Point A with x-coordinate 6 is on the graph.

Calculate the y-coordinate of A.

(a)  

Consider the function y = x² − 2.

Point C with y-coordinate −2 is on the graph.

What is the x-coordinate

of C?

(a)  

Point B(−2, 1) is on the graph of y = ax².

Calculate a.

(a)  

In the figure on the right you see part of a

rollercoaster. The part above the ground is

modelled by the function h = −0.6x² + 18.6.

Here, x and h in metres.

What is the maximum height of the

rollercoaster above the ground?

(a)  

At a certain moment, Piet is in a cart at

x = −3. At what height is Piet at that moment?

(a)  

Consider the function

(a)  

(a)  

 $consider\ the\ function\ y=3+\sqrt{x}$  
Point C with y-coordinate 13 is on the graph.
Calculate the x-coordinate of C.

(a)