Graphing Y = Ax^2

What is another way to say "where a function crosses the x-axis"?

• x-intercept

• zero

• root

• all of these.

Which direction would the parabola of the following quadratic function open towards?

f\left(x\right)=3x^2-5x-7

• Opens downward

• Opens to the right

• Opens upward

• Opens to the left

How does the parabola open? y = - x² + 4x - 1

• up

• down

• left

• right

Will this graph be wider or narrower than the parent function?

y = 2x² + 3x + 5

• wider

• narrower

Will this graph be wider or narrower than the parent function?

• wider

• narrower

Will this graph be wider or narrower than the parent function?

• wider

• narrower

Which of the following could most likely be y = 5x² + 1?

• 
• 
• 
• 

Determine if the function graphed has a maximum or a minimum value and identify that value.

• maximum at -1

• minimum at -1

• maximum at 4

• minimum at 4

What is the arrow pointing at? How can you use this value to determine the minimum/maximum values?

• The arrow is pointing at the y-intercept. The y value of this point is equivalent to the maximum/minimum 

• The arrow is pointing at the vertex. The x value of this point is equivalent to the maximum/minimum

• The arrow is pointing at the solution. The y value of this point is equivalent to the maximum and the x value is equivalent to the minimum

• The arrow is pointing at the vertex. The y value is equivalent to the minimum/maximum

Find the vertex

y = x² + 16x + 71

• (−8, 7)

• (−8, 3)

• (8, 10)

• (16, −2)