8th Math EOY Review 1

Front

What is a scale factor in dilation?

Back

A scale factor is a number that scales, or multiplies, a quantity. In dilation, it determines how much a figure is enlarged or reduced.

Front

If point A (8, 12) is dilated to point A' (2, 3), what is the scale factor?

Back

The scale factor is ¼.

Front

What are irrational numbers?

Back

Irrational numbers are numbers that cannot be expressed as a fraction of two integers. They have non-repeating, non-terminating decimal expansions.

Front

To which subset of the real numbers does π belong?

Back

π belongs to the subset of Irrational Numbers.

Front

What is the distance formula between two points (x1, y1) and (x2, y2)?

Back

The distance formula is d = √((x2 - x1)² + (y2 - y1)²).

Front

Calculate the distance between the points (1, 2) and (4, 6).

Back

The distance is 5.

Front

What is the approximate value of √17?

Back

√17 is approximately between 4 and 5.

Front

What is the definition of a rational number?

Back

A rational number is any number that can be expressed as a fraction a/b, where a and b are integers and b ≠ 0.

Front

What is the value of x if 2x + 4 = 36?

Back

x = 16.

Front

What is the formula for the area of a circle?

Back

The area of a circle is A = πr², where r is the radius.