at least two correct points correctly plotted or their two points, from (a), correctly plotted or if they restart with a table of values, at least two of their points correctly plotted
M1
may be from a table of values may be implied by their line tolerance \(\pm\) 2mm ignore incorrect points
Straight, ruled line from \((-3,\ 7.5)\) to \((3,\ -1.5)\)
A1
Additional guidance
If their points in (a) give a line which cannot be drawn from \(x = -3\) to \(x = 3\) allow the line drawn to be between the possible integer values of \(x\)
If they restart with a table of values and achieve M1, the only way to achieve M1A1 is for the line to be the correct one i.e. \(y = 3 - 1.5x\)
No tolerance on length of line, it must reach at least from \(-3\) to 3 on \(x\)-axis
