(a) On the grid, draw the graph of \(y = 4x + 2\) for values of \(x\) from −2 to 3(3)
The point with coordinates (\(p\), 50) lies on the line with equation \(y = 4x + 2\)
(b) Work out the value of \(p\). (2)
Mark scheme (a)
Scheme
Marks
\(x\)
−2
−1
0
1
2
3
\(y\)
−6
−2
2
6
10
14
Answer: Correct line
B3
(3)
Notes
B3: for a correct line between \(x = -2\) and \(x = 3\)
If not B3 then award B2 for a correct line through at least 3 of (−2, −6) (−1, −2) (0, 2) (1, 6) (2, 10) (3, 14) OR for all of (−2, −6) (−1, −2) (0, 2) (1, 6) (2, 10) (3, 14) plotted, not joined OR line through (0, 2) and clear attempt to use a gradient of 4 eg line through (0, 2) and (1, 10)
If not B2 then award B1 for at least 2 correct points stated or plotted (may be in a table) OR for a line drawn with a positive gradient through (0, 2) OR for a line with a gradient of 4
