Please help me guys anyone?

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

Which coefficient matrix represents a system of linear equations that has a unique solution ? options in photo*

See attachment below and find the equivalent of tan(∠qsr)