## Algebra: A Combined Approach (4th Edition)

$\frac{3}{25}$
Step 1: The expression to be evaluated is $\frac{2x-7y}{x^{2}}$ Step 2: Substituting x=5 and y=1 into the equation, we get $\frac{2(5)-7(1)}{5^{2}}$ Step 3: $\frac{2(5)-7(1)}{5^{2}}=\frac{10-7}{25} = \frac{3}{25}$