7th grade First Semester Review

Front

What do you know about corresponding sides in similar triangles?

Back

In similar triangles, corresponding sides are proportional in length. For example, if triangle ABC is similar to triangle DEF, then side AB corresponds to side DE.

Front

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

Back

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

Front

How do you find the total cost of multiple items?

Back

Multiply the price of one item by the number of items. For example, if one box of candy costs $0.95 and you buy 3, the total cost is 0.95 * 3 = $2.85.

Front

What is percent increase?

Back

Percent increase is calculated by taking the difference between the new value and the original value, dividing by the original value, and then multiplying by 100. Formula: ((new value - original value) / original value) * 100.

Front

What does the equation y = 2x + 4 represent?

Back

This is a linear equation where the slope is 2 and the y-intercept is 4. It represents a straight line on a graph.

Front

How do you determine the corresponding side of a triangle?

Back

To determine the corresponding side, identify the angles of the triangles. The sides opposite to equal angles are corresponding sides.

Front

What is the meaning of 'slope' in a linear equation?

Back

The slope indicates the steepness of the line and the direction it goes. A positive slope means the line rises, while a negative slope means it falls.

Front

How do you create a table from a linear equation?

Back

To create a table, choose values for x, substitute them into the equation to find corresponding y values, and list the pairs (x, y).

Front

What is the formula for calculating the area of a triangle?

Back

The area of a triangle is calculated using the formula: Area = 1/2 * base * height.

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line, defined by the equation y = mx + b.