Plot points ... line, using a ruler, from the line down to the \(x\)-axis and read the value on the \(x\)-axis. A linear graph could be used when exchanging euros into pounds, two different ...

Some important points ... An equation of the form ax + by + c = 0, where a, b and c are real numbers, such that a and b are not both zero, is called a linear equation in two variables.

With their understanding of unit rates and proportional relationships, they connect these concepts to points on a line and ultimately use them to solve linear equations. In English, students will ...