Question 367357
You have the correct answer. Good job.



A simple graph will confirm your answer.




Graph of {{{2x^2 + 4x - 1}}}


{{{ drawing(500, 500, -4, 4, -4, 4,
 graph( 500, 500, -4, 4, -4, 4,2x^2 + 4x - 1)

)}}}


Notice how it has a vertex of (-1,-3) and a y-intercept of (0,-1)