Solving One-Variable Equations with Systems — Unit test

Question 1

If f(x) = x2 – 25 and g(x) = x – 5, what is the domain of ?

Revolt · Accepted Answer

all real values of x except x = 5

Question 2

The tables for f(x) and g(x) are shown below.xf(x)–5–11–21113529xg(x)–5–7–2–115513What is the value of (f – g)(5)?

Revolt · Accepted Answer

16

Question 3

Which graph represents the same relation as the set ?

Revolt · Accepted Answer

A coordinate plane has 4 points. The points are (negative 3, 2), (3, negative 2), (3, 3), (5, 5).

Question 4

Which statement best describes how to determine whether f(x) = x2 – x + 8 is an even function?

Revolt · Accepted Answer

Determine whether (–x)2 – (–x) + 8 is equivalent to x2 – x + 8.

Question 5

If g(x) is an odd function, which function must be an even function?

Revolt · Accepted Answer

f(x) = g(x)2

Question 6

Which system of equations can be graphed to find the solution(s) to 4x2 = x2 + 7?

Revolt · Accepted Answer

mc006-3.jpg

Question 7

Which relation below represents a one-to-one function?

Revolt · Accepted Answer

A 2-column table has 5 rows. The first column is labeled x with entries 9, 2, 4, 1, 5. The second column is labeled f (x) with entries 12, 7, 9, 13, 5.

Question 8

For what value of is the function one-to-one?

Revolt · Accepted Answer

13

Question 9

What is the domain of the relation graphed below?

Revolt · Accepted Answer

domain:

Question 10

Lionel computed the average rate of change in the depth of a pool over a two-week interval to be zero. Which statement must be true?

Revolt · Accepted Answer

The pool must have been the same depth at the start of the interval as it was at the end of the interval.

Solving One-Variable Equations with Systems — Unit test Answers

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