8th Math Semester 1 Review

Front

What is the formula for finding the perimeter of a polygon?

Back

The perimeter of a polygon is the sum of the lengths of all its sides.

Front

What does it mean if a slope is undefined?

Back

An undefined slope occurs when a line is vertical, meaning it has no horizontal change (rise/run = ∞).

Front

How do you find the x-intercept of a linear equation?

Back

To find the x-intercept, set y = 0 in the equation and solve for x.

Front

How do you find the y-intercept of a linear equation?

Back

To find the y-intercept, set x = 0 in the equation and solve for y.

Front

What does it mean for a function to be increasing?

Back

A function is increasing on an interval if, as x increases, the value of the function also increases.

Front

What is the slope of a line?

Back

The slope of a line is a measure of its steepness, calculated as the change in y divided by the change in x (rise/run).

Front

What is a linear function?

Back

A linear function is a function that graphs to a straight line, typically in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

What is the difference between x-intercept and y-intercept?

Back

The x-intercept is where the graph crosses the x-axis (y=0), while the y-intercept is where it crosses the y-axis (x=0).

Front

What is the significance of the y-intercept in a linear equation?

Back

The y-intercept represents the value of y when x is zero, indicating where the line crosses the y-axis.

Front

How can you determine if a function is increasing or decreasing from its graph?

Back

If the graph rises as you move from left to right, the function is increasing; if it falls, the function is decreasing.