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Question 8 of 10

On a piece of paper, graph [tex]\( y - 5 \ \textgreater \ 2x - 10 \)[/tex]. Then determine which answer choice matches the graph you drew.

A. Graph A
B. Graph B
C. Graph C
D. Graph D


Sagot :

To graph the inequality [tex]\( y - 5 > 2x - 10 \)[/tex], let's break down the steps:

1. Rewrite the Inequality:

First, we'll rewrite the inequality in slope-intercept form (i.e., [tex]\( y = mx + b \)[/tex]). Starting with the given inequality:
[tex]\[ y - 5 > 2x - 10 \][/tex]

2. Isolate [tex]\( y \)[/tex]:

Add 5 to both sides to isolate [tex]\( y \)[/tex]:
[tex]\[ y - 5 + 5 > 2x - 10 + 5 \][/tex]
[tex]\[ y > 2x - 5 \][/tex]

3. Determine the Boundary Line:

The boundary line for this inequality is [tex]\( y = 2x - 5 \)[/tex]. We will draw this line, but since the inequality is strict (">" rather than "≥"), the boundary line will be dashed to indicate that points on the line are not included in the solution.

4. Graph the Boundary Line:

- The slope ([tex]\( m \)[/tex]) is 2, indicating that for every 1 unit increase in [tex]\( x \)[/tex], [tex]\( y \)[/tex] increases by 2 units.
- The y-intercept ([tex]\( b \)[/tex]) is -5, indicating that the line crosses the y-axis at [tex]\( (0, -5) \)[/tex].

Draw the line [tex]\( y = 2x - 5 \)[/tex], making sure to use a dashed line.

5. Shade the Region:

Since the inequality is [tex]\( y > 2x - 5 \)[/tex], we need to shade the region above the dashed line. This is because for [tex]\( y \)[/tex] to be greater than [tex]\( 2x - 5 \)[/tex], any point (x, y) satisfying the inequality will lie above the boundary line.

6. Determine the Matching Graph:

Among the given choices (A, B, C, and D), we need to find the graph that has:
- A dashed boundary line passing through the points (0, -5) and with a slope of 2.
- The region above the dashed line shaded.

Considering the steps above:
- The line has a slope of 2.
- The y-intercept is -5.
- The line is dashed.
- The area above the line is shaded.

The correct graph that matches these criteria should be identified based on the given choices.

We conclude that the correct answer is:

```
commented_graph_choice_number
```
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