Unit 2 Test Review

Front

What is the slope of a vertical line?

Back

Undefined

Front

What is the slope of a horizontal line?

Back

0

Front

What is the formula for slope between two points (x1, y1) and (x2, y2)?

Back

Slope = (y2 - y1) / (x2 - x1)

Front

What is the slope-intercept form of a linear equation?

Back

y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the point-slope form of a linear equation?

Back

y - y1 = m(x - x1), where (x1, y1) is a point on the line and m is the slope.

Front

How do you determine if two lines are perpendicular?

Back

Two lines are perpendicular if the product of their slopes is -1.

Front

What is a dilation in geometry?

Back

A transformation that alters the size of a figure but not its shape.

Front

What is the scale factor in a dilation?

Back

The ratio of the distance from the center of dilation to a point on the image and the distance from the center to the corresponding point on the pre-image.

Front

How do you find the coordinates of a dilated point A(x, y) with a scale factor k?

Back

A' = (kx, ky)

Front

What is the angle of rotation for the letter H to map onto itself?

Back

180 degrees.