Algebra 1 STAAR Practice

Front

What is the y-intercept of a quadratic function?

Back

The y-intercept is the point where the graph intersects the y-axis. For the function f, the y-intercept is 4, represented as (0, 4).

Front

How do you identify the x-intercept from a graph?

Back

The x-intercept is the point where the graph intersects the x-axis. For function k, the x-intercept is located at (-3, 0).

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 images. For function k, the axis of symmetry is x = -3.

Front

How do you solve a system of equations?

Back

You can solve a system of equations by substitution or elimination. For the equations 3x - 5y = 22 and y = -5x + 32, the solution for x is 6.5.

Front

What does the rate of change represent in a linear relationship?

Back

The rate of change indicates how much one variable changes in relation to another. For the average height of trees, the rate of change is 7 feet/year.

Front

What is the ordered pair for the y-intercept?

Back

The ordered pair for the y-intercept is (0, -2), where the graph intersects the y-axis.

Front

What is a quadratic function?

Back

A quadratic function is a polynomial function of degree 2, typically in the form f(x) = ax^2 + bx + c.

Front

What is the standard form of a linear equation?

Back

The standard form of a linear equation is Ax + By = C, where A, B, and C are constants.

Front

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

Back

The slope (m) is calculated as m = (y2 - y1) / (x2 - x1) using two points (x1, y1) and (x2, y2).

Front

What is the vertex of a parabola?

Back

The vertex is the highest or lowest point of a parabola. It can be found using the formula x = -b/(2a) for the quadratic equation ax^2 + bx + c.