exam Maths Puzzle Numerical Ability

the ordered pair (5,6) is a solution to the system:
x=y=11
x-y=-1
true or false?

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exam Other Question

Kackie Smith won $60,000.00 in a slot machine in Las Vegas. She invested part at 2% simple interest and the rest at 3%. She earned a total of $1600.00 in interest. How much was invested at each rate? Write an equation of the line containing the given point and perpendicular to the given line.

(7,-7);6x+5y=7

The equation of the line is y= ____