exam Maths Puzzle Numerical Ability

2.1x+45.2=3.2-8.4x

1/3(2x-1)=7

1/6(3/4x-2)=-1/5

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exam Other Question

How can you show a graph that approaches negative infinty as x approaches 3 from the left?

Thank you.
4. Solve the system by the addition method. Determine whether the equations are independent, dependent, or inconsistent. Show your work.

3x - 2y = -7
x - 5y = 2