2425 Semester Exam Simplifying and Solving Practice

Front

Solve the system of equations: y = 5x + 1 and y = 3x + 13

Back

(6, 31)

Front

Simplify the expression: 3x + 4(y - 2x) + 8xy - (4xy - 3y)

Back

-5x + 7y + 4xy

Front

Simplify the expression: 20W + 7(2Q - 3W + Z) - 2(3W + 4Z)

Back

-7W + 14Q - Z

Front

What is a system of equations?

Back

A set of two or more equations with the same variables.

Front

What does it mean to solve a system of equations?

Back

Finding the values of the variables that satisfy all equations in the system.

Front

What is the substitution method in solving systems of equations?

Back

Replacing one variable with an expression from another equation.

Front

What is the elimination method in solving systems of equations?

Back

Adding or subtracting equations to eliminate one variable.

Front

What is a linear equation?

Back

An equation that makes a straight line when graphed.

Front

What is the standard form of a linear equation?

Back

Ax + By = C, where A, B, and C are constants.

Front

What is a polynomial?

Back

An expression consisting of variables and coefficients, using only addition, subtraction, multiplication, and non-negative integer exponents.