Identify the reflection rule on a coordinate plane that verifies that triangle a(-1,7), b(6,5), c(-2,2) and a'(-1,-7), b'(6,-5), c'(-2,-2) triangle are congruent when reflected over the x-axis.
a) (x, y) → (-x, -y)
b) (x, y) → (x, -y)
c) (x, y) → (-x, y)
d) the triangles are not congruent

Option B is correct.

The reflection rule is followed here is,  .

Explanation:

Since, the triangle is reflected over the x-axis , then only y- coordinates will get changed but the x coordinates will remain the same.

Therefore, the only reflection rule on the coordinate plane that verifies the triangle are congruent when reflected over x-axis is,

just do 5.2 + 2 ( 7.2) and 1/3 x 3 (.9) and youv'e got your equation. 0.9( 9/10) + 7.2 ^2 = 16.4 hope i could !

step-by-step explanation: