Mixed Degree Systems — Unit test Answers
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21
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Russ is solving an equation where both sides are linear expressions. He sets the expressions equal to y and graphs the system finding that they are the same line. How should Russ interpret this outcome?
A
There are no intersection points.B
There is exactly one intersection point.C
There are exactly two intersection points.D
There are infinitely many intersection points. ✓ Correct22
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What is the equation of the axis of symmetry of the graph of y + 3x – 6 = –3(x – 2)2 + 4?
A
mc008-1.jpg
B
mc008-2.jpg
C
mc008-3.jpg
D
mc008-4.jpg
23
Which function is a quadratic function?
A
y – 3x2 = 3(x2 + 5) + 1B
y2 – 7x = 2(x2 + 6) + 7C
y – 2x2 = 6(x3 + 5) – 4D
y – 5x = 4(x + 5) + 924
For what values of m does the graph of y = 3x2 + 7x + m have two x-intercepts?
A
m greater-than StartFraction 25 Over 3 EndFraction
B
m less-than StartFraction 25 Over 3 EndFraction
C
m less-than StartFraction 49 Over 12 EndFraction
D
m greater-than StartFraction 49 Over 12 EndFraction
25
Solve for in the equation .
A
x = 6 plus-or-minus 3 StartRoot 10 EndRoot
B
x = 6 plus-or-minus 2 StartRoot 7 EndRoot
C
x = 12 plus-or-minus 3 StartRoot 22 EndRoot
D
x = 12 plus-or-minus 3 StartRoot 10 EndRoot
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