(a) Complete the table of values for \(y = \dfrac{1}{2}x - 1\)
\(x\)
\({-2}\)
\({-1}\)
\(0\)
\(1\)
\(2\)
\(3\)
\(y\)
\({-2}\)
\(0\)
(2)
(b) On the grid, draw the graph of \(y = \dfrac{1}{2}x - 1\) for values of \(x\) from \(-2\) to 3(2)
(c) Use your graph to find the value of \(x\) when \(y = 0.3\) (1)
Mark scheme (a)
Answer
Mark
Notes
(−2) −1.5 −1 −0.5 (0) 0.5
B2
for a fully correct table
[B1
for 2 or 3 correct entries]
Mark scheme (b)
Answer
Mark
Notes
Correct line
M1
for correctly plotting at least 5 of their points (provided B1 scored in part (a)) or for a straight line with gradient 0.5 or for a straight line through \((0, -1)\) with a positive gradient
A1
for a correct line between \(x = -2\) and \(x = 3\)
Mark scheme (c)
Answer
Mark
Notes
2.6
B1
for answer in the range 2.5 to 2.7 or ft a single straight line with positive gradient
