Unit Test / Unit Test Review

Which point shows the location of 5 - 2i on the complex plane below? point A point B point C point D

C

Susan plans to use 120 feet of fencing to enclose a rectangular area for a garden. Which equation best models the area, y, of the rectangular garden that she creates if one side is x feet long?A = lw y = (60 - x)(x) y = (120 - x)(120 + x) y = (120 - x)(x) y = (60 - x)(60 + x)

A

When graphed, which parabola opens downward? y = -3x2 y = (x - 3)2 y = one-third x squared y = x2 - 3

A

Adam is using the equation (x)(x + 2) = 255 to find two consecutive odd integers with a product of 255. When Adam solves the problem using the zero product property, what do those solutions represent? two possible "first" integers two possible "second" integers the two consecutive odd integers with a product of 255 a possible "first" integer and a possible "second" integer

A

Louis used a quadratic equation to model the height, y, of a falling object x seconds after it is dropped. Which ordered pair generated by this model should be discarded because the values are unreasonable? (-4, 1) mc006-1.jpg mc006-2.jpg (6, 0)

A

For what values of m does the graph of y = mx2 - 5x - 2 have no x-intercepts?

B

What is the greatest possible integer value of x for which is an imaginary number? 3 4 5 6

B

What is the sum of 12 - 5i and -3 + 4i? -16 + 63i 9 - i 9 - 9i 15 - 9i

B

What is the value of i 97 - i? -i 0 -2i

B

Which equation represents a graph with a vertex at (1, -6)? y = 3x2 + 6x - 3 y = 3x2 - 6x - 3 y = 3x2 - 8x - 1 y = 3x2 - 3x - 6

B

Use the zero product property to find the solutions to the equation x2 - 9 = 16. x = -3 or x = 3 x = -6 or x = -3 x = -5 or x = 5 x = 7 or x = 1

C

Use the zero product property to find the solutions to the equation x2 - x - 6 = 0. x = -3 or x = -2 x = -3 or x = 2 x = -2 or x = 3 x = 2 or x = 3

C

Which pair of complex numbers has a real-number product? (1 + 3i)(6i) (1 + 3i)(2 - 3i) (1 + 3i)(1 - 3i) (1 + 3i)(3i)

C

What is the value of i 20+1? 1 -1 -i i

D

Which equation is y = 3(x - 2)2 - (x - 5)2 rewritten in vertex form?

D