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The parabola $y=18x^2 - 48x - 77$ has two $x$-intercepts. The line symmetry of the graph is $x =k$. Solve for $k$.

 Mar 25, 2020
 #1
avatar+111330 
+1

y =  18x^2  -48x  - 77

 

The  line of symmetry is given by :

 

x =  -(-48)  / (2 (18) )  =    48 /36 =     4 / 3

 

cool cool cool

 Mar 25, 2020
edited by CPhill  Mar 25, 2020
 #2
avatar+1970 
+1

Nice, Chris!~!

CalTheGreat  Mar 25, 2020

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