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This shows the axes of a graph, labelled with the scales. There are two lines. One is drawn from left to right and is marked with equal intervals that are labelled 0, 1, 2 and 3. The right-hand end of the line has an arrowhead, pointing to the right. This line is labelled as the horizontal axis. The second line meets the horizontal axis at its left-hand end and is perpendicular to this axis. It is marked with equal intervals that are labelled 0, 1, 2 and 3. The point where the two lines meet (where both scales are zero) is labelled as the origin. This new line is labelled as the vertical axis as it goes vertically up the page. It also has an arrowhead at the top end, pointing upwards, away from the origin. An arrow points to the scale with the text ‘Scale marked’.

 2 Line graphs