Answer:y=9
Step-by-step explanation:
Answer:
4. 
5. 
6.
or 3.5
Step-by-step explanation:

Multiply those 2 values whose diagonal has both terms and divide by the term whose diagonal has the variable.

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Sounds like "formulas"! y = ax^2 + bx + c involves the variable x and the constants {a, b, c}. The "2" indicates "squaring function."