Plotting Straight Line Graphs

To plot a graph from its equation:

• Re‑arrange the equation into the form y = mx + c.
• Pick 3 sensible values for x (including 0), then solve for y.
• Plot the points on a grid.
• Join them with a straight line that crosses the y‑axis.
• The graph will cut the y‑axis at (0, c) and have gradient m.