A2 CP Practice Test 1B

Front

What is a function in mathematics?

Back

A function is a relation between a set of inputs and a set of possible outputs where each input is related to exactly one output.

Front

What is a matrix?

Back

A matrix is a rectangular array of numbers, symbols, or expressions, arranged in rows and columns.

Front

How do you determine the order of a matrix?

Back

The order of a matrix is determined by the number of rows and columns it has, expressed as 'rows x columns'.

Front

What is a quadratic equation?

Back

A quadratic equation is a second-degree polynomial equation in the form ax² + bx + c = 0, where a, b, and c are constants.

Front

What does it mean for a system of equations to have no solution?

Back

A system of equations has no solution when the equations represent parallel lines that never intersect.

Front

What is the solution to a system of linear equations?

Back

The solution to a system of linear equations is the point(s) where the lines intersect, representing the values of the variables that satisfy all equations.

Front

What is the purpose of using matrices in solving equations?

Back

Matrices are used to simplify the process of solving systems of equations, especially when dealing with multiple equations and variables.

Front

What is the graphical representation of a function?

Back

The graphical representation of a function is a visual depiction of the relationship between the input and output values, typically shown on a coordinate plane.

Front

What is the difference between linear and quadratic functions?

Back

Linear functions have a constant rate of change and graph as straight lines, while quadratic functions have a variable rate of change and graph as parabolas.

Front

What is the significance of the discriminant in a quadratic equation?

Back

The discriminant (b² - 4ac) determines the nature of the roots of a quadratic equation: if positive, there are two real roots; if zero, one real root; if negative, no real roots.