Applying and Analyzing Quadratic Functions

Find the zero(s) of the function: y = 1.2x² - 6

• -3 and 1.33

• -3.5 and -1.25

• 2.24 only

• -2.24 and 2.24

Suppose the vertex of a parabola is at (1, 5). If (5, 21) is another point on this parabola, which of these would be as well?

• (-2, 18)

• (2, 7)

• (-3, 21)

• (7, 25)

Answer the Following Regents Question

• x= -4, 10

• x= -10, 4

A function is shown. f(x) = x² - 6x -27.

Fill in the blanks below to make the statement true.

"The graph of f(x) has a minimum value of ​ (a)   and has zeros at ​ (b)   and ​ (c)   ​

• -27

• -36

• -33

• -42

• -9

• -3

• 0

• 3

• 9

• 4

Which answer choice describes  y = -3x² +7x - 2 accurately?

• opens up with a maximum

• opens up with a minimum

• opens down with a maximum

• opens down with a minimum 

Analyze the given graph and the determine the correct function.​ (a)   ​ (b)  

• x(x-2)

• x+(x-2)

• (x+4)(x+5)

• (x-0)

Answer explanation

This is only one possible choice. As long as the y-intercept is less than 3 and the quadratic shows a maximum value for its vertex, it would be correct.

• 0.4 seconds

• Frog's time to reach maximum height

• 0 inches

• Frog's landing time

• 0.8 seconds

• Frog's maximum height

• 12 inches

• Frog's initial height