Assign 1 - Graphing Quadratic Functions

Determine the minimum value of $f\left(x\right)=2x^2-4x-18$   
.

What is the vertex of y = x²+ 16x + 71 ?

The axis of symmetry line always passes through which point on a parabola?

• y-intercept

• any random point

• vertex

• the origin

Answer explanation

Notes page 1

• A
• B
• C
• D

What are the green dots called?

• axis of symmetry
• vertex
• parabola
• roots or x-intercepts

What are the zeros of the parabola? 

• (1, 0) and (5, 0)

• (3, 0) and (-5, 0) 

• (3, 0) and (1, 0)

• (-6, 0) and (1, 0)

How do you know if a parabola has a minimum?

• When ‘a’ is positive there is a minimum

• When ‘a’ is negative there is a minimum

• When all the numbers in the equation are negative there is a minimum

• When all the numbers in the equation are positive there is a minimum

Find the y-intercept of f(x) = 2x² - 2x + 1

• 2
• -2
• 1
• -1

Which best describes the vertex of a parabola?

• Any point on the parabola.

• A point on the x-axis.

• The highest or lowest point of a parabola

• A point on the y-axis.

Answer explanation

Notes page 1

What is the equation for axis of symmetry?

• y = 3

• x = 3

• x = 5

• x = 1