Quadratic Zeros

Define Zero

• Where the parabola touches or intersects the x- axis, also called the x-intercept

• A line that divides the graph into two equal parts. i.e. cuts the graph in half

• The highest or lowest point on the graph

• Where the parabola touches or intersects the y-axis

How many solutions does this graph have?

• one

• two

• no solutions

• cannot be determined

How many solutions does this graph have?

• one

• two

• no solutions

• cannot be determined

What are the zeros for the function
f(x) = (x + 7)(x + 5)

• (7 , 0) and (5 , 0)

• (0 , 7) and (0 , 5)

• (-7 , 0) and (-5 , 0)

• (7 , 0) and (5 , 0)

What is the capital of France?

• Paris

• London

• Berlin

• Madrid

Find the zero(s) of the function: y = 4x² - 4x + 1

• -3 and 1.33

• 0.50 only

• 0.50 and 0

• 0 and 2

Find the roots/zeros of x² + 4x - 21

• -7, 3

• -3, 7

Find the roots/zeros of x² - x - 20

• -5, 4

• -4, 5

Find the roots/zeros of x² + 5x -14

• -2, 7

• -7, 2

Find the roots/zeros of x² + x - 2

• -1, 2

• -2, 1