AnswersPBCSD_Grade_Forgiveness_1200330_Algebra 2_S1_2024Radical Equations and Extraneous Roots

Mixed Degree Systems Answers

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1
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Which graph shows a system of equations with no solutions?

A
On a coordinate plane, the graphs of 2 circles are shown. Both circles have a center at (0, 0). The smaller circle is within the larger circle and the smaller circle has a radius that is 2 units smaller than the larger circle.
Option A
B
On a coordinate plane, a graph of a line and a parabola are shown. The line is horizontal to the x-axis at y = negative 5. The parabola opens up and its vertex on the line.
Option B
C
On a coordinate plane, the graphs of 2 circles are shown. Both circles are in quadrant 1, and they intersect each other.
Option C
D
On a coordinate plane, the graphs of 2 parabolas are shown. Both parabolas open up and they intersect each other at (0, 0). The first parabola has a vertex in quadrant 3 and the second parabola has a vertex in quadrant 4.
Option D
2
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Consider the following system of equations.Which statement describes why the system has infinite solutions?

Question illustration
A
The equations represent parabolas that result in graphs that do not intersect.
B
The equations represent circles that result in graphs that do not intersect.
C
The equations represent parabolas that result in the same graph.
D
The equations represent circles that result in the same graph.
3

What are the solutions of the following system?

Question illustration
A
(0, –5) and (–5, 5)
B
(0, –5) and (5, –15)
C
(0, –5) and (–4, 3)
D
(0, –5) and (4, –13)
4

What are the solutions to the following system?

Question illustration
A
(0, 2)
B
(1, –2)
C
and
Option C
D
and
Option D
5

How many solutions exist for the system of equations in the graph?

Question illustration
A
one
B
two
C
three
D
four
6

What are the solutions of the following system?

Question illustration
A
and
Option A
B
and
Option B
C
(6, 312) and (–6, 312)
D
(6, 312) and (–6, –264)
7

Consider the following system of equations.Which statement describes why the system has two solutions?

Question illustration
A
Each graph has one y-intercept, which is a solution.
B
Each graph has one vertex, which is a solution.
C
The graphs of the equations intersect the x-axis at two places.
D
The graphs of the equations intersect each other at two places.
8

The center of a circle is at the origin on a coordinate grid. The vertex of a parabola that opens upward is at (0, 9). If the circle intersects the parabola at the parabola’s vertex, which statement must be true?

A
The maximum number of solutions is one.
B
The maximum number of solutions is three.
C
The circle has a radius equal to 3.
D
The circle has a radius less than 9.
9

Which graph represents the solution of the system ?

Question illustration
A
On a coordinate plane, a graph of a circle and a straight line are shown. The circle has a center at (0, 0) and a radius of 4 units. The line has a negative slope and goes through (negative 3, 4), (0, 1), and (1, 0).
Option A
B
On a coordinate plane, a graph of a circle and a straight line are shown. The circle has a center at (0, 0) and a radius of 2 units. The line has a positive slope and goes through (negative 3, negative 4), (0, negative 1), and (1, 0).
Option B
C
On a coordinate plane, a graph of a circle and a straight line are shown. The circle has a center at (0, 0) and a radius of 4 units. The line has a positive slope and goes through (negative 3, negative 4), (0, negative 1), and (1, 0).
Option C
D
On a coordinate plane, a graph of a circle and a straight line are shown. The circle has a center at (0, 0) and a radius of 2 units. The line has a negative slope and goes through (negative 3, 4), (0, 1), and (1, 0).
Option D
10

Which equation is part of solving the system by substitution?

Question illustration
A
4(y + 11)2 – 3y2 = 8
B
4(11 – y)2 – 3y2 = 8
C
4(y – 11)2 – 3y2 = 8
D
4(–11y)2 – 3y2 = 8

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