Algebra 1 STAAR Practice 2018-2019 Knowledge

Front

What is a positive correlation in a scatter plot?

Back

A positive correlation indicates that as one variable increases, the other variable also increases.

Tags

CCSS.HSF-LE.A.1B

Front

What does it mean if two lines have the same y-intercept?

Back

It means that both lines cross the y-axis at the same point.

Front

What is the slope of a horizontal line?

Back

The slope of a horizontal line is zero.

Tags

CCSS.8.EE.B.5

Front

What is the maximum value of a quadratic function?

Back

The maximum value is the highest point on the graph of the quadratic function.

Front

What is the vertex of a quadratic graph?

Back

The vertex is the highest or lowest point of the parabola, depending on its orientation.

Front

What is a negative correlation in a scatter plot?

Back

A negative correlation indicates that as one variable increases, the other variable decreases.

Tags

CCSS.HSF-LE.A.1B

Front

What does it mean if two lines are parallel?

Back

Parallel lines have the same slope but different y-intercepts.

Tags

CCSS.8.EE.B.5

Front

How do you find the slope of a line given two points?

Back

The slope is calculated as (y2 - y1) / (x2 - x1).

Tags

CCSS.8.EE.B.5

Front

What is the standard form of a linear equation?

Back

The standard form is Ax + By = C, where A, B, and C are integers.

Front

What is the difference between a linear and a quadratic function?

Back

A linear function has a constant rate of change, while a quadratic function has a variable rate of change and forms a parabola.