176k views
5 votes
10 9 8 7 6 5 4 19 -10 -9 -8 -7 X -6 -5 -4 -3.-2 4 5 6 7 8 9 10 3 756789 -10 Slope of one of the dotted lines: Slope of the reflection line:what is the slope of the reflection line

10 9 8 7 6 5 4 19 -10 -9 -8 -7 X -6 -5 -4 -3.-2 4 5 6 7 8 9 10 3 756789 -10 Slope-example-1

1 Answer

7 votes

Answer:

The slope of one of the dotted lines: -1

The slope of the reflection line: 1

Step-by-step explanation:

The slope of a line that passes through two points (x1, y1) and (x2, y2) can be calculated as:


m=\frac{\text{Rise}}{\text{Run}}=(y_2-y_1)/(x_2-x_1)

Therefore, the slope of the dotted line that passes through the points (-1, 2) and (5, -4) is:


m=(-4-2)/(5-(-1))=(-6)/(5+1)=-(6)/(6)=-1

So, the slope of one of the dotted lines is -1

In the same, we can calculate the slope of the reflection line, replacing (x1, y1) by (2, -1) and (x2, y2) by (0, -3), so:


m=(-3-(-1))/(0-2)=(-3+1)/(-2)=(-2)/(-2)=1

So, the slope of the reflection line is 1.

User Ryder Brooks
by
6.0k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.