Foundation January 2023 Paper 1 Q11

EdexcelFoundationCurrent spec3 marksDrawing & Using Graphs Linear Graphs & Gradients

11 On the grid below, draw the graph of \(y = 1 - 2x\) for values of \(x\) from –2 to 3

Coordinate grid with x from -2 to 3 and y from -6 to 8

(3)

Mark scheme

Scheme

Marks

\(x\)	–2	–1	0	1	2	3
\(y\)	5	3	1	–1	–3	–5

(–2, 5) (–1, 3) (0, 1) (1, –1) (2, –3) (3, –5)
Answer: Correct line between \(x = -2\) and \(x = 3\)

(3)

(3 marks)

Notes

B3: for a correct line between \(x = -2\) and \(x = 3\)

(B2 for a correct straight line segment through at least 3 of (–2, 5) (–1, 3) (0, 1) (1, –1) (2, –3) (3, –5)
or
for all of (–2, 5) (–1, 3) (0, 1) (1, –1) (2, –3) (3, –5) plotted but not joined)

(B1 for at least 2 correct points stated (may be in a table) or plotted or for a line drawn with a negative gradient through (0, 1) or for a line with a gradient of –2)