Core concept 4.2:
184.108.40.206 Know that a set of coordinates, constructed according to a mathematical rule, can be represented algebraically and graphically
Change the coordinates and then move the sliders to make the line go through all the coordinates.
220.127.116.11 That writing linear equations in the form y = mx + c helps to reveal the structure
y = mx
y = mx+c
The graphs above allow you to make connections between the bar model (algebra tile), graph, coordinates and table.
The graphs below clearly show the gradient as steps. A similar activity can be done with Cuisenaire rods square paper.