Math  /  Algebra

Question(7,4);9b+4a=86a+5b42=0(7,-4) ; \begin{array}{l}9 b+4 a=-8 \\ 6 a+5 b-42=0\end{array}

Studdy Solution
Substitute the given point (7,4)(7, -4) into the second equation:
6(7)+5(4)42=0 6(7) + 5(-4) - 42 = 0
Calculate:
422042=0 42 - 20 - 42 = 0
This simplifies to:
0=0 0 = 0
The point satisfies the second equation.
The point (7,4)(7, -4) satisfies both equations, confirming that it is a solution to the system.

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