Question

if a point is reflected across the x - axis, what happens to the y - coordinate? a. it is halved. b. it becomes its opposite. c. it stays the same. d. it is doubled. which axis is the vertical axis on a coordinate plane? a. y - axis b. x - axis c. z - axis d. w - axis

Explanation:

1. When a point is reflected across the x - axis, the x - coordinate remains the same and the y - coordinate changes its sign (becomes its opposite). For example, if a point is (x,y) and reflected across the x - axis, it becomes (x, - y).
2. In a two - dimensional coordinate plane, the vertical axis is the y - axis and the horizontal axis is the x - axis.

Answer:

1. b. It becomes its opposite.
2. a. y - axis