Problemas
Find the vertex for the parabola whose equation is given y=3x^2+6x-4 A. (-1,-7) B. (1,5) C. (2,20) D. (-2,2)
Roztwór
Ramón
maestro · Tutor durante 5 años
4.2
(155 Votos)
Respuesta
To find the vertex of the parabola given by the equation
, we can use the vertex formula for a quadratic equation in the form
. The x-coordinate of the vertex is given by
, and the y-coordinate is found by substituting this x-value back into the original equation.Given:
Here,
,
, and
.Step 1: Calculate the x-coordinate of the vertex.
Step 2: Calculate the y-coordinate of the vertex by substituting
back into the original equation.
Therefore, the vertex of the parabola is
.The correct answer is:A.