Topic 2 Review

Front

What is the reflection of a point R over the y-axis?

Back

To reflect a point R(x, y) over the y-axis, change the sign of the x-coordinate. The reflection of R(-1, 6) is R'(1, 6).

Front

How do you locate a point A on the coordinate plane?

Back

An ordered pair (x, y) represents a point on the coordinate plane, where x is the horizontal position and y is the vertical position. For example, point A is located at (-1.5, 2.5).

Front

What does the inequality -0.5 < 7/4 mean?

Back

This inequality states that -0.5 is less than 7/4. It is true because -0.5 is approximately -0.5 and 7/4 is 1.75.

Front

How do you calculate the distance between two points (x1, y1) and (x2, y2)?

Back

Front

What is the formula for the perimeter of a rectangle?

Back

Front

How do you find the length of a side of a rectangle given its coordinates?

Back

To find the length of a side, subtract the y-coordinates of the vertical sides or the x-coordinates of the horizontal sides. For rectangle EFGH, the length is |10 - 2| = 8 units.

Front

What is the significance of the x-axis and y-axis in a coordinate plane?

Back

The x-axis is the horizontal line, and the y-axis is the vertical line. They intersect at the origin (0, 0) and help in locating points.

Front

What is an ordered pair?

Back

An ordered pair (x, y) consists of two numbers that represent a point's position on the coordinate plane, where x is the horizontal coordinate and y is the vertical coordinate.

Front

What does it mean for a point to be in the first quadrant of the coordinate plane?

Back

A point is in the first quadrant if both its x and y coordinates are positive.

Front

How do you determine if an inequality is true?

Back

To determine if an inequality is true, compare the values on either side of the inequality sign. For example, check if -0.5 is less than 7/4.