Algebra STAAR Review

Front

What is the x-intercept of a graph?

Back

The x-intercept is the point where the graph crosses the x-axis, meaning the value of y is 0.

Front

How many zeros can a parabola have?

Back

A parabola can have 0, 1, or 2 zeros, depending on its position relative to the x-axis.

Front

What does it mean if a parabola has a minimum value?

Back

A minimum value indicates the lowest point on the graph of the parabola, which occurs at the vertex.

Front

What is the slope of parallel lines?

Back

Parallel lines have equal slopes.

Front

What is a horizontal stretch in a graph?

Back

A horizontal stretch occurs when the graph is stretched away from the y-axis, making it wider.

Front

What is the vertex of a parabola?

Back

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

Front

What is the standard form of a quadratic equation?

Back

The standard form is y = ax^2 + bx + c, where a, b, and c are constants.

Front

What does the 'a' value in a quadratic equation indicate?

Back

The 'a' value determines the direction of the parabola (upward if positive, downward if negative) and its width.

Front

How do you find the axis of symmetry for a parabola?

Back

The axis of symmetry can be found using the formula x = -b/(2a) from the standard form of the quadratic equation.

Front

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

Back

A linear function has a constant rate of change and graphs as a straight line, while a quadratic function has a variable rate of change and graphs as a parabola.