12.16 Math 2 S1 Practice Final Exam

Enrique graphed an equation and stated that it had no x-intercepts. Which equation could he have graphed?

• C) y = (x - 3)(x - 2)

What is the length of D'E' if triangle DEF is dilated by a scale factor of 2 to form triangle D'E'F' and DE = 4?

• A) 2

• B) 4

• C) 6

• D) 8

• A) (5, 6)

• B) (0, 6)

• C) (5, -6)

• D) (0, -6)

Which equation represents the graph below?

• B) (x + 6)(x - 2)

• C) x(x - 8) - 12

• A) -7

• B)-2

• C) 5

• D) 7

• A) The football lands first because it has a higher vertex than the baseball.

• B) The football lands first because f(0) > b(0).

• C) The baseball reaches a greater maximum height because b(t) > f(t) when t > 0.

• D) The baseball was thrown from a higher starting point because b(0) > f(0).

What is another word that describes the roots of a quadratic function?  

• y-intercepts
• vertex
• solutions

• maximum

How many solutions does the quadratic graphed have?

• 2

• 1

• 0

• unknown

Solve by factoring.
z² - 18z + 81 = 0

• z = 9
• z = -9
• z = 9 or z = -9