WorksheetsUnit 4A Review
Total questions: 10
Worksheet time: 35mins
Which best represents the function whose graph is shown?
y = x2 + 4x + 7
y = x2 + 2x – 4
y = x2 – 4x + 7
y = x2 – 2x – 4
What are the solutions to the equation that is graphed?
{ -3, -1, 3}
{-3, -1}
{ -3}
{-1,3}
Identify the y-intercept and the axis of symmetry for the graph of f(x) = –3x2 + 6x + 12.
2; x = –12
12; x = 1
–2; x = 0
–12; x = –1
Determine whether f(x) = –5x2 – 10x + 6 has a maximum or a minimum value and find that value.
minimum; –1
maximum; –1
minimum; 11
maximum; 11
Subtract two complex numbers below
(15 – 13i), (–1 + 17i)
16 + 4i
16 + 30i
16 – 30i
46
Find the quotient of (1 + 2i) and (2 - 3i).
78+71i
78+i
−4+7i
−134+137i
Which quadratic equation has roots –2 and 3?
x2 + x + 6 = 0
x2 – x – 6 = 0
x2 – 6x + 1 = 0
x2 + x – 6 = 0
Find the product of these two complex numbers below.
(5 + 2i), (1 + 3i)
5 + 6i
–1
–1 + 17i
11 + 17i
ELECTRICITY The total impedance of a series circuit is the sum of the impedances of all parts of the circuit. A technician determined that the impedance of the first part of a particular circuit was 2 + 5j ohms. The impedance of the remaining part of the circuit was 3 – 2j ohms. What was the total impedance of the circuit?
5 + 3j ohms
5 + 7j ohms
–1 + 7j ohms
16 + 11j ohms
Solve 18x2 + 15 = 39x by factoring.
Keep your answers as simplest fractions (No decimals).
(a)
