LINEAR & QUADRATIC GRAPHS Functions & Graphs LINEAR & QUADRATIC GRAPHS

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

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 )

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 – 6 - 4  x  3 X -4 -3 -2 -1 1 2 3 X 2 16 9 4 - 4 - 6 -6 Y 6

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

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) = 4 x = - 3.7 or 2.7

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

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

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

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