Question

Which point is the image of (-7,1) reflected across the y-axis? "-enter answer as an ordered pair without

spaces**

Answer 1

The image point of (-7, 1) after reflection across the y-axis is:

• (7, 1)

Explanation:

When a point P(x, y) is reflected across the y-axis, we reverse the sign of the x-coordinate while the y-coordinate remains the same.

Thus,

The rule to reflect a point across the y-axis is:

P(x, y) → P'(-x, y)

In our case, we are given the point (-7, 1)

Let say the point is A(-7, 1).

Thus, using the rule to reflect a point across the y-axis is:

P(x, y) → P'(-x, y)

A(-7, 1) → A'(-(-7), 1) → A'(7, 1)

Therefore, the image point of (-7, 1) after reflection across the y-axis is:

• (7, 1)