exam Maths Puzzle Numerical Ability

Find the slope of a line whose equation is y= -6x+3

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exam Other Question

30% of the members of a swim club have passed the lifesaving test.Among the members who have not passed the test, 12 have taken the preparatory course and 30 have not taken the cou Solve the system of equations by the Gaussian elimination method:
1. Solve the system of equations by the Gaussian elimination method:
2x+y-3z=1
3x-y+4z=6
x+2y-z=9

2. Sol