Preclass 2 – Functions

Name: _____________________

1.    Find the domain and range of the relation.

{(5, -3), (-2, 5), (4, 0), (2, 7)}

2.      Find the domain and range of the relation. y = 2x + 7

3.      Find the domain and range of the relation. y = 5

4.      Find the domain and range of the relation. y=2x+7

5. Determine whether a relation is a function.

{(-7, 5), (6, 0), (-2, 7)}

6. Determine whether a relation is a function.

{(7, 5), (6, 0), (7, -100)}

7. Determine whether the relation defines y as a function of x. -4x² = y +5

8. Determine whether the relation defines y as a function of x. -4x = 2y² – 7

9. Determine whether a relation defines y as a function of x. y = -3x +5

10. Given fx=-5x+2.  Find f(-1), f(2), f(u – 1), f(2x+3)

11.    Given fx=x-7x2+3x-10.  Find f(5), and f(2).

12.    Given fx=x-11-7.  Find f(11), f (12), f(13), f(20) and f(2).

13. Understand and use piecewise functions.

a)   fx=4x+3
if x<0-5x+2
if x≥0

f(-3), f(0), f(2)

b)   fx=3x+1  if x≤2-2x2+3x
if x>2

f(-3), f(0), f(2)

v:* {behavior:url(#default#VML);}
o:* {behavior:url(#default#VML);}
w:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}

Normal
0

false
false
false

EN-US
X-NONE
X-NONE

/* Style Definitions */
table.MsoNormalTable
{mso-style-name:”Table Normal”;
mso-tstyle-rowband-size:0;
mso-tstyle-colband-size:0;
mso-style-noshow:yes;
mso-style-priority:99;
mso-style-parent:””;
mso-padding-alt:0cm 5.4pt 0cm 5.4pt;
mso-para-margin:0cm;
mso-para-margin-bottom:.0001pt;
mso-pagination:widow-orphan;
font-size:10.0pt;
font-family:”Calibri”,sans-serif;}