Straight-Line Graphs | Edexcel GCSE Foundation | 40 Worked Examples

Every question fully worked, one step at a time, in the Edexcel Foundation style. This 40-question pack builds straight-line graphs (y = mx + c) from the ground up: reading the gradient and y-intercept off an equation, substituting to find points, completing tables of values, spotting which equation is linear, finding a gradient from two points, and reading where a line crosses the axes. It then moves into finding the equation of a line from a gradient and a point or from two points, rearranging into y = mx + c, midpoints, parallel lines (equal gradients), and interpreting a gradient as a rate of change in real contexts (a filling tank, a taxi fare). The challenging section stretches to intersections, collinear points, the area of a triangle formed with the axes, and finding both m and c together. Kept tightly to the Foundation tier, so perpendicular lines are not included. Each solution is broken down to one operation per line, with a plain-English note on every line and the real Edexcel mark-scheme codes [M1] [A1] [B1] [P1] folded in exactly where the marks fall, so students see not just the answer but where each mark comes from. Clean, printable and mapped to spec references A9, A10 and R14. Ideal for classwork, homework, revision or 1-1 tuition. Full answers included.