FT; mark final answer allow 2 marks for 19 – 4(2) = 11 oe
Mark scheme (b)
Scheme
Marks
Comments
\(2x - 3 = 4\times3x\) or \(\dfrac{2}{4}x - 3x = \dfrac{3}{4}\) oe, si
B1
FT until 2nd error
or separates fractions and collects terms
\(10x = -3\) oe
B1
FT; allow for \(-\dfrac{10}{4}x = \dfrac{3}{4}\)
\(x = -\dfrac{3}{10}\) oe; ISW
B1
FT ‘their expression of the form \(ax = b\), where \(a \ne \pm1\) and \(b \ne 0\)’
Mark scheme (c)
Scheme
Marks
Comments
(c)(i) \(3x \gt 5 - 2\) oe
M1
\(x \gt 1\) oe
A1
No marks for use of “=”, unless finally replaced to give \(x \gt 1\) then award M1 A1; mark final answer
(ii) Empty circle at 1 with arrow right
B1
STRICT FT ‘their (c)(i)’ provided an inequality; if a line drawn rather than an arrow then there must be no idea of termination and it must extend as far as the end of the number line
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