exam Maths Puzzle Numerical Ability

What is the solution for 2x-y=6
6x-3y=12

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exam Other Question

Find the distance between (-4,0) and (-5,-3). Write the answer in radical form. Hi, I have the following question and I have to dertime the linear function f(t) with slope -1 and f(2)=1
I have done slope= -1 and (2,1)
form f(x)=ax+b
a= -1
since f(2)=1
f