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.

Front

What is the maximum value of a quadratic function?

Back

The maximum value of a quadratic function is the highest point on its graph, which occurs at the vertex if the parabola opens downwards.

Front

What does it mean if the slope of a linear equation is undefined?

Back

An undefined slope indicates a vertical line, where the x-value does not change regardless of the y-value.

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

How can you identify a factor of a quadratic graph?

Back

A factor of a quadratic graph can be identified by finding the x-intercepts of the graph, which correspond to the roots of the quadratic equation.

Front

What is a negative correlation in a scatter plot?

Back

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

Front

What is the standard form of a quadratic equation?

Back

The standard form of a quadratic equation is ax² + bx + c = 0, where a, b, and c are constants.

Front

How do you find the slope of a linear equation in slope-intercept form?

Back

In slope-intercept form (y = mx + b), the slope is represented by 'm'.

Front

What is the axis of symmetry in a quadratic function?

Back

The axis of symmetry is a vertical line that divides the parabola into two mirror-image halves, passing through the vertex.

Front

What does it mean for a quadratic function to have no real roots?

Back

A quadratic function has no real roots if its graph does not intersect the x-axis, which occurs when the discriminant is less than zero.