5A- 1st Semester Exam

Front

What is the equation of the Line of Best Fit for a given data set?

Back

The equation of the Line of Best Fit is a linear equation that best represents the data points in a scatter plot. It can be used to predict values.

Front

How do you solve a system of inequalities by graphing?

Back

To solve a system of inequalities by graphing, graph each inequality on the same coordinate plane and identify the region where the solutions overlap.

Front

Simplify the expression: y² + 4xy + 4x + 5y² - 2xy - 2x.

Back

The simplified form is 6y² + 2xy + 2x.

Front

What is a repeating decimal?

Back

A repeating decimal is a decimal fraction that eventually repeats the same sequence of digits indefinitely. It is classified as a rational number.

Front

What is a rational number?

Back

A rational number is any number that can be expressed as the quotient or fraction p/q of two integers, where p is the numerator and q is the denominator (q ≠ 0).

Front

What is the difference between rational and irrational numbers?

Back

Rational numbers can be expressed as fractions, while irrational numbers cannot be expressed as simple fractions and have non-repeating, non-terminating decimal expansions.

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 slope of a line given two points?

Back

The slope (m) is calculated using the formula m = (y2 - y1) / (x2 - x1) where (x1, y1) and (x2, y2) are the coordinates of the two points.

Front

What is the purpose of the Line of Best Fit?

Back

The Line of Best Fit is used to model the relationship between two variables and to make predictions based on that relationship.

Front

What does it mean for a number to be rational?

Back

A number is rational if it can be expressed as a fraction of two integers.