1. LINEAR & QUADRATIC GRAPHS
Functions & Graphs
LINEAR & QUADRATIC GRAPHS

2. Graph the function f: x  2x + 1 for –1  x  5-1 1 2 3 4 5 2X -2 6 8 10 Y 7 9 11

3. f(x) = 2x + 1 Now match up your x and y values (-1, -1 ) ( 0, 1 )
( 0, 1 )
( 1 , 3 )
( 2 , 5 )
( 3 , 7 )
( 4 , 9 )
( 5 , 11 )

4. Draw the graph of the function f(x) = x2 + x – 6 - 4  x  3
Quadratic Graphs
Draw the graph of the function f(x) = x2 + x –  x  3 X -4 -3 -2 -1 1 2 3
X 2 16 9 4
- 4
- 6 -6 Y 6

6. For what values of x does f (x) = 0-3 2
For what values of x does f (x) = 0
For f(x) = x = or x = 2

7. Find the values of x when f(x) = 4
-3.7
2.7
Find the values of x when f(x) = 4
For f(x) = x = or 2.7

8. Draw the graph of the function f(x) = - 2x2 + 7x – 3 -1  x  41 2 3 4
-2x2 -2 -8
-18
-32 7x -7 7 14 21 28 -3 y
-12

10. Use your graph to find the value of f(2½)
x = 2½ f(2½) = 2

11. f(x) = 0
0.5 3
Use your graph to find the values of x when f(x) = 0
x = & x = 3

12. 3.5
f(x) = - 3
Use your graph to find the value of x when f(x) = -3
x = 0 or 3.5