PSAT Math Practice

Front

What is a system of equations?

Back

A set of two or more equations with the same variables that are solved together.

Front

How do you find the value of x in a system of equations?

Back

You can use substitution or elimination methods to solve for x.

Front

What is a quadratic function?

Back

A function that can be expressed in the form g(x) = ax^2 + bx + c, where a, b, and c are constants.

Front

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

Back

Set y = 0 in the equation and solve for x.

Front

What is the y-intercept of a function?

Back

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

Front

What does it mean for a function to be defined?

Back

A function is defined when it has a specific output for every input in its domain.

Front

What is the significance of the x-intercept and y-intercept in a graph?

Back

They indicate where the graph crosses the axes, providing key points for sketching the graph.

Front

What is the standard form of a linear equation?

Back

The standard form is Ax + By = C, where A, B, and C are integers.

Front

How do you solve for y in terms of x in a linear equation?

Back

Rearrange the equation to isolate y on one side.

Front

What is the relationship between the coefficients in a linear equation and its graph?

Back

The coefficients determine the slope and y-intercept of the line.