Fast & Curious - Most Missed TEKS

Front

What is a linear regression equation?

Back

A linear regression equation is a mathematical representation of the relationship between two variables, typically in the form y = mx + b, where m is the slope and b is the y-intercept.

Front

How do you calculate the slope in a linear equation?

Back

The slope (m) is calculated by taking the change in y (rise) divided by the change in x (run) between two points on the line.

Front

What does the y-intercept represent in a linear equation?

Back

The y-intercept is the value of y when x is 0, representing the point where the line crosses the y-axis.

Front

What is an inequality?

Back

An inequality is a mathematical statement that compares two expressions, showing that one is greater than, less than, or not equal to the other.

Front

How do you solve the inequality -4x + 10 ≥ 5x + 55?

Back

To solve, first isolate x: -4x - 5x ≥ 55 - 10, which simplifies to -9x ≥ 45. Dividing by -9 (and flipping the inequality) gives x ≤ -5.

Front

What does the solution set represent in an inequality?

Back

The solution set is the set of all values that satisfy the inequality, indicating which values make the inequality true.

Front

What is the difference between strict and non-strict inequalities?

Back

Strict inequalities (<, >) do not include the boundary point, while non-strict inequalities (≤, ≥) do include the boundary point.

Front

How can you graph an inequality on a number line?

Back

To graph an inequality, use an open circle for strict inequalities and a closed circle for non-strict inequalities, then shade the appropriate direction.

Front

What does the expression x > 3 mean?

Back

The expression x > 3 means that x can take any value greater than 3, but not equal to 3.

Front

What is the significance of the solution x > 3 in a real-world context?

Back

In a real-world context, x > 3 could represent a condition where a quantity must exceed 3 units, such as age, height, or quantity.