Quiz 1 Section 1.1 Precalculus

Indicate whether the statement is true or false.

This mapping diagram represents a function.

• True

• False

Indicate whether the statement is true or false.

This graph represents a function.

• True

• False

Indicate whether the statement is true or false.

This graph represents a function.

• True

• False

Use the graphed relation to answer the following. State the relation domain and range using interval notation.

• $D\ =\left[0\ \infty\right)$

• $R\ =\ \left(-\infty,\ \infty\right)$

• $D\ =\ \left[0,\ \infty\right]$

• $R\ =\left[-\infty,\ \infty\right]$

Given y = 2x – 4 where x = {0, 1, 2, 3, 4}, answer the following.

Express the relation as a set of ordered pairs.

• {(-4, 0), (-2, 1), (0, 2), (3, 2), (4, 4)}

• {(0, –4), (1, –2), (2, 0), (3, 2), (4, 4)}

Given y = 2x – 4 where x = {0, 1, 2, 3, 4}, answer the following.

Graph the relation.

Evaluate responses using AI:

OFF

Given y = 2x – 4 where x = {0, 1, 2, 3, 4}, answer the following.

Is the relation a function?

• Yes

• No

Describe each using interval notation.

• $\left(-2,\ \infty\right)$

• $\left[\left(-2\ \infty\right)\right]$

Describe each graph using interval notation.

• $\left[-2,\ 4\right)\ \cup\left(4,\ \infty\right)$

• $\left(-2,\ 4\right)\cup\left(4,\ \infty\right)$

Write the inequality in interval notation, then graph the interval on a number line.

•