Review for Semester Exam Part 1

Front

What is the reflection of the function f(x) = ⎜x⎟ across the x-axis?

Back

k(x) = - ⎜x⎟

Front

What is the GCF of the polynomial 4x^2 + 8x?

Back

4x

Front

Which of the following is NOT a function?

Back

Option 4

Front

What is the imaginary part of the complex number 4 + 5i?

Back

5

Front

What is the result of subtracting (8 - 3i) - (3 + 7i)?

Back

5 - 10i

Front

Define a function in mathematics.

Back

A function is a relation that assigns exactly one output for each input.

Front

What is the domain of the function f(x) = 1/x?

Back

All real numbers except x = 0.

Front

What is the range of the function f(x) = x^2?

Back

All real numbers greater than or equal to 0.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / 2a.

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as a fraction, while irrational numbers cannot.