exam Maths Puzzle Numerical Ability

use graphing to find the solutions of the system
y-x=6
y+2x=-6

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exam Other Question

A defence attorney charges her client $4000 plus $120 per hour. The formula R = 120n + 4000 gives her revenue in dollars for n hour of work. What is her revenue for 100 hours of w Good Evening,
What is the slope of any line that is perpendicular to the line through (-3,5) and (4,-6)?
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