Substitution Property of Equality

What is the definition of substitution property of equality?

• The property that states if a = b, then b = a

• The property that states if a = b and b = c, then a = c

• The property that states if a = b, then a can be replaced by b in any equation

• The property that states if a = b, then a + c = b + c

Which of the following is an example of substitution property of equality?

• If x = 5 and y = x, then y = 5

• If a = b and b = c, then a = c

• If a = b, then a + c = b + c

• If a = b, then b = a

How is substitution property of equality applied in solving equations?

• By substituting variables with their values in an equation

• By rearranging terms in an equation

• By multiplying both sides of an equation by the same number

• By adding or subtracting the same number from both sides of an equation

If x = 3 and y = 2x, what is the value of y?

• 1

• 2

• 3

• 6

Which property allows us to substitute 4 for x in the equation 3x + 2 = 14?

• Addition property of equality

• Subtraction property of equality

• Multiplication property of equality

• Substitution property of equality

If a = 2 and b = 3, what is the value of a + b?

• 2

• 3

• 5

• 6

If x = 4 and y = 2x + 3, what is the value of y?

• 7

• 10

• 11

• 14

Which property allows us to substitute 9 for x in the equation 2x - 5 = 13?

• Addition property of equality

• Subtraction property of equality

• Multiplication property of equality

• Substitution property of equality

If a = 5 and b = 2a - 3, what is the value of b?

• 2

• 5

• 7

• 10

If a = 4 & b = 6, what is 3a + 5b?

• 40
• 42
• 44
• 46