MATHEMATICS

JAMB 2017 - Question 35

Mathematics 2017 JAMB Past Questions - Question 35: the operation * on the set R of real numbers is defined by x*y = 3x-2y -1 find 3* -1

Use the diagram to answer question
the operation * on the set R of real numbers is defined by x*y = 3x-2y -1 find 3* -1
A:
B:
C:
D:
Examkits App

Examkit's JAMB CBT App

Practice JAMB offline with our Online, PC and Mobile App

  • ✅ 25+ years of past questions (2000 to 2025)
  • ✅ Video solutions and explanation to questions
  • ✅ E-library
  • ✅ Study by topic
  • ✅ And more.

Correct Answer

C

Explanation

X*y = 3x +2y -1x y therefore x = 3 x y=-13*-1substitute 3x3 + (2x(-1)-19-2-19-3=6