19:00
1 of 5
Higher
Non-calculator
A7 Functions
Question 1 · 4 marks
Spec and skills
Paper scope: Paper 1: non-calculator practice
Spec A7
Spec A17
Original practice question
Answer and supported method checks
f
(
x
)
=
5
−
2
x
f(x) = 5 - 2x
f
(
x
)
=
5
−
2
x
.
Find the value of
a
a
a
for which
f
(
a
)
=
f
−
1
(
a
)
f(a) = f^{-1}(a)
f
(
a
)
=
f
−
1
(
a
)
.