Understanding Parabolas and Lines

The video tutorial explains how to find the intersection points between a parabola and a line. It starts by identifying one intersection point from the graph and then proceeds to solve the system of equations using substitution. The quadratic equation is factored to find the solutions, and the exact coordinates of the intersection points are determined. The tutorial emphasizes understanding the relationship between the equations and their graphical representation.

What are the given equations of the parabola and the line in the problem?

• y = 4x^2 - 5x + 1 and y - x - 1 = 0

• y = 3x^2 - 6x + 1 and y - x + 1 = 0

• y = 2x^2 - 4x + 3 and y + x - 1 = 0

• y = x^2 - 3x + 2 and y - 2x + 1 = 0

Tags

CCSS.8.EE.C.8A

What is the clearly identifiable intersection point from the graph?

• (2, 1)

• (0, 1)

• (3, 2)

• (1, 2)

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What method is used to solve the system of equations in the video?

• Substitution

• Graphing

• Elimination

• Matrix Method

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

How is the linear equation rewritten for substitution?

• y = 2x + 1

• y = 2x - 1

• y = x - 1

• y = x + 1

What is the quadratic equation obtained after substitution?

• 4x^2 - 6x + 2 = 0

• 3x^2 - 7x + 2 = 0

• 2x^2 - 5x + 3 = 0

• x^2 - 4x + 1 = 0

Which two numbers are used for factoring the quadratic equation?

• -4 and -3

• -6 and -1

• -5 and -2

• -7 and -1

What are the factors of the quadratic equation?

• (x - 2)(2x - 1)

• (x - 1)(3x - 2)

• (x - 2)(3x - 1)

• (x - 3)(3x - 2)

Tags

CCSS.HSA.REI.C.7

What is the x-coordinate of the second intersection point?

• 1/2

• 1/4

• 1/3

• 2/3

Tags

CCSS.HSA.REI.C.7

Which equation is used to find the y-coordinate of the second intersection point?

• The original quadratic equation

• The factored quadratic equation

• The rewritten linear equation

• The original linear equation

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6

What is the y-coordinate of the second intersection point?

• -3/4

• -1/2

• -2/3

• -1/3

Tags

CCSS.8.EE.C.8B

CCSS.HSA.REI.C.6