LAB Section 1.2
1. For the pair of points (4, 2) and (5, 1)
a) Graph the points, and then connect the dots.
b) Find the slope using the slope formula and check using the graph.
Efgy $5. QLQi :3 % 3;, .
g at W Li we M
@W i
0) Write the equation of th

LAB Section 4.4
1) Given the following matrices, perform the indicated operations or explain why it
cannot be done.
5
A=[
4
3 1
]
4 2
a) AC
b) AC + 2B
c) A2
d) CA D
2 5
B=[
]
0 3
1 2
C = [1 4]
9 2
1 3
D = [3 1
1 2
1
4]
1

LAB Section 4.6
1) Write the system as a matrix equation and solve using inverses.
x1 + 5x2 = 24
2x1 2x2 = 36
2) A biologist has available two commercial food mixes containing the percentage of
protein and fat given in the table.
Mix
Protein (%)
Fat (%)
A

LAB Section 4.7
1) An economy is based on two sectors, transportation and manufacturing. Production
of a dollars worth of transportation requires an input of $0.10 from transportation
and $0.40 from manufacturing, and production of a dollars worth of manu

LAB Section 4.1
1) Solve the following system by graphing.
3x 4y = -12
-6x + 8y = -24
2) A company produces Italian sausages and bratwursts at plants in Green Bay and
Sheboygan. How many hours should each plant operate to exactly fill an order for
62,250

LAB Section 1.2
1. For the pair of points (4, 2) and (5, -1)
a) Graph the points, and then connect the dots.
y
x
b) Find the slope using the slope formula and check using the graph.
c) Write the equation of the line in slope-intercept form and state t