Chapter 11 Data Analysis and Statistics - 11.4 Select and Draw Conclusions from Samples - 11.4 Exercises - Mixed Review - Page 771: 34

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Given: $y=x^2-5x-24$ We can see that $a=1\\b=-5\\c=-24$ Find the vertex: $x=-\frac{b}{2a}=-\frac{-5}{2(1)}=2.5\\y=-\frac{121}{4}=-30.25$ Find some points $x=-3\rightarrow y=0\\x=0\rightarrow y=-24\\x=8 \rightarrow y=0$