Name__________________________________
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10.1-10.7 Quiz - Honors PreCalculus - NO CALCULATOR PART
SHORT ANSWER. SHOW ALL WORK!!!!!!!!!
Use the substitution method to solve the system
.
1
)
5x -
y
= 13
2x + 3y = 12
Use the elimination method to solve the system
.
2
)
2x + 8
y
= -36
9x + 4y = 30
Solve the problem.
3
)
A tour group split into two groups when waiting in line for food at a fast food counter. The first group bought
7 slices of pizza and 6 soft drinks for $34.51 . The second group bought 6 slices of pizza and 5 soft drinks for $
29.40 . How much does one slice of pizza cost?
Solve the system of equations.
4
)
x -
y
+ 3z = 14
4x + z = 5
x + 3y + z = 8
Find the value of the determinant.
5
)
85
-4 -1
Solve for k. EXTRA CREDIT!!!!!
6
)
k
-4 -1
-2 2 0
-1 -2 8
= 10
1