7th Grade Honors Semester 1 Exam

Front

What is a proportional relationship?

Back

A proportional relationship is a relationship between two quantities where the ratio of one quantity to the other is constant.

Front

Which of the following does not represent a proportional relationship? A taxi charges $3 per mile, A gym membership costs $30 per month plus a $50 registration fee, A bakery uses 3 eggs for every 2 cups of flour, A bookstore sells notebooks at $2 each.

Back

A gym membership costs $30 per month plus a $50 registration fee.

Front

What is the result of reflecting a point (x, y) over the y-axis?

Back

(-x, y)

Front

Back

3

Front

Which transformation changes the size of a shape?

Back

Dilation.

Front

What is a dilation in geometry?

Back

A dilation is a transformation that alters the size of a figure by a scale factor.

Front

What does it mean for a transformation to preserve congruence?

Back

A transformation preserves congruence if the original figure and the transformed figure are the same size and shape.

Front

Which transformations preserve congruence?

Back

Translation, rotation, and reflection.

Front

What is the difference between a rotation and a reflection?

Back

A rotation turns a figure around a point, while a reflection flips a figure over a line.

Front

What is the formula for finding the slope of a line given two points (x1, y1) and (x2, y2)?

Back

The slope (m) is given by m = (y2 - y1) / (x2 - x1).