Alfonso graphs the inequality x greater-than negative 8 using the steps below.

Step 1: Draw a number line, and place an open circle at –8.
A number line going from negative 13 to negative 3. An open circle is at negative 8.
Step 2: Shade to the left of –8 to represent the infinite solutions to x greater-than negative 8.
A number line going from negative 13 to negative 3. An open circle is at negative 8. Everything to the left of the circle is shaded.
Step 3: Check work by substitution.
x = negative 9
Negative 9 greater-than negative 8 False

Which best describes the situation?
i know its kinda hard
A-The graph is incorrect. He should have used a closed circle at –8.
B-The graph is incorrect. He should have shaded to the right of –8.
C-The graph is correct. He should have checked his work with a number that was not on the shaded portion of the graph.
D-The graph is correct. He should have checked his work using –8.

B-The graph is incorrect. He should have shaded to the right of –8.

Step-by-step explanation:

We examine the steps Alfonso follows in graphing the inequality x > -8.

Step 1: Draw a number line, and place an open circle at –8.

A number line going from negative 13 to negative 3. An open circle is at negative 8.

The first step is correct, since we use an open circle for > or < and a closed circle for .

Step 2: Shade to the left of –8 to represent the infinite solutions to x greater-than negative 8.

This step is incorrect since values to the left are always less than.

He should have shaded to the right of -8.

The error made is Option B.

CHECK:

x=-7

-7>-8 (TRUE)

a line is an defined derm because it

a)contains an infinite number of points b) can be used to create other geometric shapes c)describes something that does not have width or depth d) is a term that does not have a formal definition. a line is an undefined term because it: contains an infinite number of points.