Year 10
Higher

Solve where xy = a and y = 2x + 1 (substituting)

Year 10
Higher

Solve where xy = a and y = 2x + 1 (substituting)

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Lesson details

Key learning points

  1. In this lesson, we will solve simultaneous equations using substitution. You need to be confident in solving quadratics by factorisation and by the quadratic formula before starting this lesson.

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3 Questions

Q1.
An image in a quiz
A
Correct answer: B
C
Q2.
An image in a quiz
A
Correct answer: B
C
Q3.
An image in a quiz
A
B
Correct answer: C

3 Questions

Q1.
An image in a quiz
A
Correct answer: B
C
Q2.
An image in a quiz
A
B
Correct answer: C
Q3.
An image in a quiz
Correct answer: A. Substitute both pairs of her solutions into one of the equations
B. Use the quadratic formula
C. Write her answers in surd form