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charle [14.2K]
3 years ago
14

Find the coordinates of each point after the described reflection. Give the distance between each point and its reflection.

Mathematics
1 answer:
AVprozaik [17]3 years ago
6 0

Complete Question:

Find the coordinates of the point after the described reflection. Give the distance between the point and its reflection. R(-5, 8) is reflected across the x-axis _____________.

Answer:

(a) R' = (-5,-8)

(b) The distance is 16 units

Step-by-step explanation:

Given

R = (-5,8)

Solving (a): Reflection across x-axis

The rule is:

R(x,y) ==> R(x,-y)

So, the reflection of R = (-5,8) is:

R' = (-5,-8)

Solving (b): The distance between R and R'

Distance (d) is calculated as:

d = \sqrt{(x_1 - x_2)^2 + (y_1 - y_2)^2}

Where:

R = (-5,8) ---- (x_1,y_1)

R' = (-5,-8) --- (x_2,y_2)

This gives:

d = \sqrt{(-5- -5)^2 + (-8- 8)^2}

d = \sqrt{(0)^2 + (-16)^2}

d = \sqrt{256}

d = 16

<em>The distance is 16 units</em>

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