Algebra 1 STAAR Practice 2018-2019 Knowledge

Front

What is the slope of a vertical line?

Back

Undefined

Front

What is the slope of a horizontal line?

Back

Zero

Front

What does it mean for a quadratic graph to have one zero?

Back

The graph touches the x-axis at exactly one point (the vertex).

Front

How can you identify a line with a negative slope on a graph?

Back

The line descends from left to right.

Front

What is a solution to a system of equations?

Back

The intersection point of the two lines, if it exists.

Front

What does it mean for a point to be in the solution set of an inequality?

Back

The point satisfies the inequality.

Front

What is the standard form of a linear equation?

Back

Ax + By = C, where A, B, and C are constants.

Front

What is the quadratic formula?

Back

x = (-b ± √(b² - 4ac)) / (2a) for the equation ax² + bx + c = 0.

Front

What is the vertex of a parabola?

Back

The highest or lowest point on the graph of a quadratic function.

Front

What does it mean for a line to be parallel?

Back

Two lines are parallel if they have the same slope and never intersect.