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1 of 5
Higher
Non-calculator
A16 Equation of a circle
Question 1 · 3 marks
Spec and skills
Paper scope: Paper 1: non-calculator practice
Spec A16
Original practice question
Answer and supported method checks
The line y = 2x + c is tangent to the circle
x
2
x^{2}
x
2
+
y
2
y^{2}
y
2
= 20. Find both possible values of c.
xⁿ
a/b
√
π
(
)
i