• substitute numbers for variables in expressions and graph and analyse the relation

Brock started making a chart to show the value of y when x changes for the expression y = x + 2

Complete Brock's chart and make a graph to show the relationship. Analyse the graph.

• translate between an oral or written expression and an equivalent algebraic expression

Write an algebraic expression for the following:

When a number is doubled and increased by seven, the result is 20.

Describe the following algebraic equation in words.

+ 5 = 2

Carl has 30 coins, all dimes and quarters. Write an expression to represent:

• the number of dimes if he has x quarters
• the total value of the coins