Math 8 MOY Review 2023

Front

What is an irrational number?

Back

An irrational number is a number that cannot be expressed as a fraction of two integers. Examples include √2 and π.

Front

How do you calculate the slope of a line given two points?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1).

Front

What is the slope of the line that passes through the points (2, 3) and (8, 6)?

Back

1/2

Front

What is the rate of change in a linear function?

Back

The rate of change is the same as the slope of the line representing the function.

Front

What is the rate of change of the linear function that passes through the points (2, 9) and (-1, 3)?

Back

2

Front

What does the equation of a line represent?

Back

The equation of a line represents the relationship between the x and y coordinates of points on that line.

Front

How do you find the equation of a line given two points?

Back

First, find the slope using the two points, then use the point-slope form of the equation: y - y1 = m(x - x1).

Front

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

Back

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

Front

What is the standard form of a linear equation?

Back

The standard form is Ax + By = C, where A, B, and C are integers.

Front

What does it mean for a line to be undefined in slope?

Back

A line is undefined in slope when it is vertical, meaning it goes straight up and down.