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1 of 5
Higher
Non-calculator
A5 Using formulae and changing the subject
Question 1 · 4 marks
Spec and skills
Paper scope: Paper 1: non-calculator practice
Spec A5
Spec A2
Original practice question
Answer and supported method checks
y
=
x
−
4
x
+
2
y=\frac{x-4}{x+2}
y
=
x
+
2
x
−
4
,
with
x
≠
−
2
x\ne-2
x
=
−
2
.
(a)
Make x the subject.
3 marks
x
y
xⁿ
a/b
√
π
(
)
=