What is the vertex of the graph of the function f(x)=x^2+8x-2
2 answers:
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Answer:
x = 15
Step-by-step explanation:
according to Altitude Theorem, we can set up this proportion:
9/RT = RT/16
RT² = 9(16)
RT² = 144
RT =
RT = 12
In right triangle STR, we can find 'x' by using the Pythagorean Theorem:
9² + 12² = x²
81 + 144 = x²
225 = x²
x = √225 = 15