Complete the matrix that represents a reflection over the x-axis in the coordinate plane.[ [1 a b c ]

lo98765432wqasdfghjkloi87654567890

step-by-step explanation:

step-by-step explanation:

this can be solved first with pythagorean theorem, which tells us to square both legs of the triangle and sum it. this will be equal to the square of the hypotenuse.

the hypotenuse is the side "opposite" the 90 degree angle, which is x.

so we can write using pythagorean theorem,

simplifying:

to further simplify this radical, we need to use the property  

thus

any of them that add up to 180 degrees.