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contestada

Find the x-intercept(s) and the coordinates of the vertex for the parabola
y=−x^2−2x-24. If there is more than one x-intercept, separate them with commas.

x-intercept(s): [ ]
vertex: [ , ]

Respuesta :

Nirina7
the answer
y=−x^2−2x-24 is like the form of y=ax² +bx +c,  to find the vertex we use the formula:
 the x intercept according to the vertex is x=-b/2a, and the vertex V is a point such that V [-b/2a, f(-b/2a)] 
the x intercept is x= -(-2) / 2(-1) =-1, and f(-1)= -1 +2 -24= -23

the vertex is V(-1, -23)

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