Question

What is the equation for the axis of symmetry in the function? y = -2x2 + 5x - 4


A. y = 5/4
B. x = 5/4
C. y = -2/5
D. x = -2/5

Answer 1

Try completing the square

Answer 2

would it be x=5/4?

Answer 3

\[-2x^2 + 5x - 4\]
\[-2(x^2 - \frac{5x}{2}) - 4\]
\[-2(x - \frac{5}{4})^2-(\frac{25}{16})(-2) - 4\]
\[-2(x - \frac{5}{4})^2-\frac{7}{8}\]
symmetry at x= 5/4

Answer 4

yes

Answer 5

thanks!

Answer 6

welcome :)