Question

1. Given that y = 7 + 3x − x², complete the table below. (2mks)

   x	−3	−2	−1	0	1	2	3	4	5	6
   y	−11			7						−11

2. On the grid provided and using a suitable scale draw the graph of
   y = 7 + 3x − x². 
3. On the same grid draw the straight line and use your graph to solve the equation
   x² - 4x – 3 = 0. 
4. Determine the coordinates of the turning point of the curve. 

Answer 1

1.  

   x	−3	−2	−1	0	1	2	3	4	5	6
   y	−11	−3	3	7	9	9	7	3	−3	−11

2. 
   
3. y=7+3x−x²
   0= −3−4x+x²
   ∴ 

   x	0	2
   y	4	2

4. (1.5, 9.8)