SEM 1 Final Review

Front

What is the algebraic representation of a reflection across the x-axis?

Back

Front

Back

-2

Front

How do you find the reflection of a point K(4, 1) across the x-axis?

Back

K'(1, 4)

Front

What is the slope of a line parallel to a line with slope -1?

Back

-1

Front

How do you find the endpoint of a segment given one endpoint and the midpoint?

Back

Use the midpoint formula: If M is the midpoint and A is one endpoint, then B = (2M - A).

Front

What is the definition of a reflection in geometry?

Back

A transformation that flips a figure over a line, creating a mirror image.

Front

What is the relationship between the slopes of two perpendicular lines?

Back

The product of their slopes is -1.

Front

What is the formula for finding the midpoint of a segment?

Back

Midpoint M = ((x1 + x2)/2, (y1 + y2)/2).

Front

If a triangle is reflected across the y-axis, what is the algebraic representation?

Back

Front

What happens to the coordinates of a point when it is reflected across the x-axis?

Back

The y-coordinate changes sign.