Assessment: 12-Point Assessment #1 (of 6)    due: day 2 of week 2

Do not lose this assessment. Do all your math on your own paper. Do not write on this assessment.

0) Expressions are _______.  [word that starts with e]
       
1) Equations are _______.    [word that starts with s]

2) Terms are separated by the ____ and ____ arithmetic operators.

3) When we have a constant times a variable, the constant is 
   called a _______________.  [word that starts with c]

4) Letters that are used in expressions (and equations) are
   called ________________.  [word that starts with v]

5) Briefly explain what a variable is.

6) No or Yes:  If x and y are variables, then xy = yx.

7) No or Yes:  If x and y are variables, then x/y = y/x.

8) Evaluate:  91 / 0

9) Evaluate:  24

The remaining exercises use expression A:  5x + 2y - 3z 

a) Expression A contains how many terms?

b) The coefficient of the first term of expression A is what?

c) The coefficient of the third term of expression A is what?

d) Expression A evaluates to  _____  when x = -1, y = 4, z = -2.

e) No or Yes:  Expression A contains "like" terms?

f) No or Yes:  5x + 2y - 3z = 4xyz

g) The first term of expression A has how many factors?

h) No or Yes:  It's possible to solve expression A for y.

i) No or Yes:  Expression A can be written as:  5x + 2y + -3z

j) No or Yes:  Expression A can be written as:  -3z + 2y + 5x