Read Quadratic Graphs

Is the graph of the equation y=2x² wider, narrower or the same width as the standard parabola y = x²?

• wider

• narrower

• same

• impossible to tell

What is the domain and the range for the graph?

• Domain : -2 ≤ x ≤ 2
  Range : 0 ≤ y ≤ 4

• Domain : 0 ≤ x ≤ 4
  Range : -2 ≤ y ≤ 2

• Domain : All real #s
  Range : y ≤ 4

• Domain : -2 ≤ x ≤ 2
  Range : y ≤ 4

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Use the graph to determine the solutions.

• -1 and -3

• 1 and -3

• 1 and 3

• -1 and 3

How many solutions does this graph have?

• one

• two

• no solutions

• cannot be determined

What is another name for the x-intercepts and solutions of a quadratic?

• y-intercept

• Zeros

• x-axis

• They don't have another name

Determine the domain and range of the function

• Domain: All real numbers

  Range: All real numbers

• Domain: x ≥ -4

  Range: All real numbers

• Domain: All real numbers

  Range: y ≥ -4

• Domain: -1 ≤ x ≤ 5

  Range: y ≥ -4

Is the domain of the quadratic function all real numbers, truth or false?

Remember, the domain is x from left to right.

A graph of a quadratic function is shown on the grid.

The function has a ​ (a)   value of ​ (b)   .

Note: Focus on the vertex.

• minimum

• -4

• maximum

• -3

• 1

• -1

• 0

A graph of a quadratic function is shown on the grid.

The function has a ​ (a)   value of ​ (b)   .

Note: Focus on the vertex.

• minimum

• -4

• maximum

• -3

• 1

• -1

• 0