

Question

The table is for the relation \(y = px^{2} - 5x + q\).



x
-3
-2
-1
0
1
2
3
4
5


y
21
6

-12



0
13



(a)(i) Use the table to find the values of p and q.
(ii) Copy and complete the table.
(b) Using scales of 2cm to 1 unit on the x- axis and 2 cm to 5 units on the y- axis, draw the graph of the relation for \(-3 \leq x \leq 5\).
(c) Use the graph to find :
(i) y when x = 1.8 ; (ii) x when y = -8.


The table is for the relation \(y = px^{2} - 5x + q\).



x
-3
-2
-1
0
1
2
3
4
5


y
21
6

-12



0
13


