Solving Systems of Equations by Substitution Quiz

What is the first step in solving a system of equations by substitution?

• Add the equations together

• Graph the equations

• Solve one equation for one variable

• Multiply both equations by a constant

In the first example, what is the value of X after solving the equation?

• 1

• 2

• 3

• 4

When solving the second example, what operation is performed after substituting the value of Y?

• Factoring the equation

• Graphing the solution

• Adding like terms

• Distributing a constant

In the third example, what is the final value of Y?

• 4

• 3

• 2

• 1

What is the value of X in the fourth example after solving the equation?

• -3

• -2

• -4

• -1

In the fifth example, what is the given value of Y?

• -1

• -3

• -2

• -4

What is the first step in solving the sixth example problem?

• Substitute the value of Y

• Subtract the equations

• Distribute a constant

• Add the equations

In the seventh example, what is the value of X after solving the equation?

• -3

• 0

• -2

• -1

In the final example, what is the value of Y after solving the equation?

• -1

• -2

• -3

• -4

What alternative method is introduced in the final example?

• Solving for X first

• Graphing the equations

• Using matrices

• Solving for Y first