Algebra 1 STAAR Practice

Front

What is a system of equations?

Back

A system of equations is a set of two or more equations with the same variables. The solution is the point(s) where the equations intersect on a graph.

Front

How do you find the x-intercept of a function?

Back

To find the x-intercept, set y = 0 in the equation of the function and solve for x.

Front

What is the y-intercept of a function?

Back

The y-intercept is the point where the graph of the function crosses the y-axis, found by setting x = 0 in the equation.

Front

What is the axis of symmetry in a quadratic function?

Back

Front

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

Back

The rate of change represents how much the dependent variable (y) changes for a unit change in the independent variable (x). It is often referred to as the slope.

Front

How do you determine the slope from a graph?

Back

Front

What is a quadratic function?

Back

Front

What is the vertex of a parabola?

Back

Front

What is the difference between a linear 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.

Front

How do you solve a system of equations using substitution?

Back

To solve by substitution, solve one equation for one variable, then substitute that expression into the other equation to find the value of the second variable.