The video tutorial explores comparing quadratic functions by examining their y-intercepts, vertices, and roots. It demonstrates how to determine which function has a higher y-intercept, a lower vertex, and a greater sum of roots. Additionally, it discusses identifying graph characteristics such as opening direction and axis of symmetry.

What is the main focus of this video?

• Comparing linear functions

• Comparing quadratic functions

• Solving linear equations

• Solving quadratic equations

What is the y-intercept of the function f(x) = x^2 - 4?

• 0

• -4

• 4

• -5

Which function has a higher y-intercept, f(x) or G(x)?

• Both have the same y-intercept

• G(x)

• f(x)

• Cannot be determined

What is the vertex form of a quadratic function?

• a(x + h)^2 + k

• a(x - h)^2 + k

• ax^2 + bx + c

• ax^2 + bx

What is the vertex of the function f(x) = x^2 - 4x + 4?

• (4, 0)

• (2, 0)

• (0, 0)

• (2, 4)

Which function has the lower vertex, f(x) or G(x)?

• G(x)

• f(x)

• Cannot be determined

• Both have the same vertex

What is the sum of the roots of the function G(x) = x - 10x + 11?

• 21

• -1

• 1

• 0

What is the sum of the roots of the function f(x) given in the table?

• 0

• 28

• -28

• 14

Which function has a greater sum of its roots, f(x) or G(x)?

• G(x)

• Cannot be determined

• f(x)

• Both have the same sum

What does it mean for a quadratic function to open down?

• The parabola is a circle

• The parabola is linear

• The parabola is concave down

• The parabola is concave up