exam Maths Puzzle Numerical Ability

Solve each of the following systems by graphing.

x - 2y = 8
3x - 2y = 12
This also has a graph t o do also.

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exam Other Question

Cindy averaged 60 mph on a trip to Chicago. Returning home she took a more scenice route and averaged 50 mph. The return trip was 2 hours longer and was 30 miles farther. How long did it take Cindy to drive to Chicago? x^2/3 -x^1-3 -12=0