exam Maths Puzzle Numerical Ability

how would you graph thislinear equation 3x - 4y = -18

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A bicyclist rode into the country for 5 h. In returning, her speed was 5 mi/h faster and the trip took 4 h. What was her speed eacy way? o.k. o.k. last one today I promise!

Use multiplying by 1 to find an expression equivalent to 16/7 with a denominator of 28x.
Do not simplify type a fraction