exam Maths Puzzle Numerical Ability

Use intercepts to graph each equation. Just show me how to get it so I can graph it, please?

7x + 3y = 2

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exam Other Question

Given in an arithmetic series that the sum of the 9th term is 162 and the sum of the 12th term is 288. What is the series? i want to check my answer on this one please tell me if i did it right.

2L+2W=72
L=2W+3

My answer is L=25 W=11

thanx!
~Carina~