Understanding Systems of Equations

The video tutorial explains how to solve a system of equations by equating two given equations. It involves expanding and simplifying the equations, leading to a quadratic equation. The quadratic formula is applied, revealing a negative discriminant, indicating no real solutions. The video further explains the graphical representation of the equations, showing that the parabolas do not intersect, confirming the absence of solutions.

What are the possible number of solutions for a system of equations?

• Two, three, or four

• None, one, or infinitely many

• One, none, or two

• One, two, or infinitely many

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CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the first step in solving the given system of equations?

• Finding the y-intercepts

• Setting the equations equal to each other

• Substituting values

• Graphing the equations

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CCSS.HSA-REI.B.4B

What operation is performed to eliminate terms from the left side of the equation?

• Adding x squared to both sides

• Multiplying by zero

• Dividing by x

• Subtracting y from both sides

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CCSS.HSA-REI.B.4B

What is the discriminant of a quadratic equation?

• b squared minus 4ac

• The square root of the equation

• The product of the roots

• The sum of the roots

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CCSS.HSA-REI.B.4B

What does a negative discriminant indicate about the solutions of a quadratic equation?

• Two real solutions

• One real solution

• No real solutions

• Infinite solutions

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CCSS.HSF-IF.C.7A

What type of graph does the equation y = 2(x - 4)^2 + 3 represent?

• A circle

• A downward opening parabola

• An upward opening parabola

• A line

Where is the vertex of the parabola y = 2(x - 4)^2 + 3 located?

• (1, -1)

• (4, 3)

• (3, 4)

• (0, 0)

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CCSS.HSF-IF.C.7A

What does the graph of y = -x^2 + 2x - 2 look like?

• An upward opening parabola

• A downward opening parabola

• A straight line

• A hyperbola

What is the vertex of the parabola y = -x^2 + 2x - 2?

• (4, 3)

• (1, -1)

• (0, 0)

• (2, 2)

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CCSS.HSA.REI.C.7

Why do the two parabolas in the system not intersect?

• Their vertices are at different heights

• They open in the same direction

• They have the same vertex

• They are both downward opening

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CCSS.HSA.REI.C.7