What is the rule if the reflection?

Answer:
option c
[tex]r_{x-axis}[/tex]->(x,-y)
Step-by-step explanation:
When you reflect a point across the x-axis, the x-coordinate remains the same, but the y-coordinate is transformed into its opposite (its sign is changed), So we can see from the graph that,
point M(-5,4) is reflected to m'(-5,-4)
similarly,
point N(-2,3) is reflected to N'(-2,-3)
point L(-4,2) is reflected to L'(-4,-2)
ANSWER
[tex]r_{x-axis}(x,y)\to (x,-y)[/tex]
EXPLANATION
The coordinates of the vertices of the preimage triangle are
L(-4,2), M(-5,4) and N(-2,3).
The coordinates of the vertices of the image triangle are
L'(-4,-2), M'(-5,-4) and N'(-2,-3).
We can see that the y-intercept coordinates of the triangle LMN were negated to obtain, the vertices of triangle
L'M'N'
This is a reflection in the x-axis.
The rule for the reflection is
[tex]r_{x-axis}(x,y)\to (x,-y)[/tex]
The third option is correct.