Coordinate Algebra EOC Released Items

Front

What is a linear regression model?

Back

A linear regression model is a statistical method used to model the relationship between a dependent variable and one or more independent variables by fitting a linear equation to observed data.

Front

How do you interpret the slope in a linear regression equation?

Back

The slope indicates the change in the dependent variable for each one-unit increase in the independent variable.

Front

What is the formula for the perimeter of a rectangle?

Back

The perimeter P of a rectangle is given by the formula P = 2(length + width).

Front

If a rectangle's dimensions are increased by x meters in each direction, how does the perimeter change?

Back

The new perimeter becomes P = 2((length + x) + (width + x)) = 2(length + width + 2x) = original perimeter + 8x.

Front

What is a transformation in geometry?

Back

A transformation is an operation that moves or changes a shape in some way, such as translation, rotation, reflection, or dilation.

Front

What does it mean to reflect a shape across an axis?

Back

Reflecting a shape across an axis means flipping it over that axis, creating a mirror image.

Front

What is the difference between a solid line and a dashed line in graphing inequalities?

Back

A solid line indicates that points on the line are included in the solution set, while a dashed line indicates that points on the line are not included.

Front

How do you determine the solution set for the inequality x > 3y - 2?

Back

To graph the inequality, first graph the line x = 3y - 2 as a dashed line, then shade the region above the line.

Front

What is the effect of a translation on a geometric figure?

Back

A translation moves every point of a figure the same distance in a specified direction.

Front

What does a rotation of 180° about the origin do to a point (x, y)?

Back

A rotation of 180° about the origin transforms the point (x, y) to (-x, -y).