Pleasseee hellppp 20 points will be ! identify the reflection rule on a coordinate plane that verifies that triangle a(-2,3), b(-3,-2), c(-10,0) and triangle a'(2,3), b'(3,-2), c'(10,0) are congruent when reflected over the y-axis. a) (x, y) → (-x, -y) b) (x, y) → (x, -y) c) (x, y) → (-x, y) d) the triangles are not congruent

i think the answer u are looking for is b

wrong answer

Step-by-step explanation:

Wrong answer

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.