NC Math 1 EOC Review

Front

Factor x² - 16

Back

(x - 4)(x + 4)

Front

If a student with a GPA of 1.5 is added to the group, how would the mean and median be affected?

Back

The mean would decrease and the median would stay the same.

Front

As x increases, y decreases. What type of correlation is this?

Back

Negative correlation

Front

Set up the system: Enterprise charges to rent compact cars for a fixed amount per day plus a fixed amount for each mile driven. Batman rented a car for 6 days, drove it 550 miles and spent $337. Superman rented the same car for 3 days, drove for 350 miles and spent $185. Let 'd' represent the fixed charge per day and 'm' represent the cost per mile.

Back

6d + 550m = 337; 3d + 350m = 185

Front

If f(x) = -1.5x - 1, give a coordinate point on the graph of f corresponding to f(-2).

Back

(-2, 2)

Front

What is the definition of a quadratic equation?

Back

An equation that can be expressed in the form ax² + bx + c = 0, where a, b, and c are constants and a ≠ 0.

Front

What is the formula for the slope of a line?

Back

Slope (m) = (y₂ - y₁) / (x₂ - x₁) where (x₁, y₁) and (x₂, y₂) are two points on the line.

Front

What does it mean for two variables to have a positive correlation?

Back

As one variable increases, the other variable also increases.

Front

What is the standard form of a linear equation?

Back

Ax + By = C, where A, B, and C are integers and A ≥ 0.

Front

What is the Pythagorean theorem?

Back

In a right triangle, a² + b² = c², where c is the length of the hypotenuse.