Question

he vertices of triangle ABC are A(​-2,5) ​,B(-2,3), and C(-5,3). Triangle ABC is reflected across the​ x-axis to produce the image ​triangle A''B''C''. Graph triangle ABC and triangle A''B''C''.

Which graph shows triangle ABC and triangle A''B''C'' ​?

Answer 1

reflection across the x-axis takes (x,y) → (x,-y)
so just flip the sign of all the y-values.