Identify the graph that has a vertex of (1,-1) and a leading coefficient of a=2.

ANSWER

EXPLANATION

The vertex form of a parabola has equation:

where V(h,k) is the vertex of the parabola and 'a' is the leading coefficient.

From the question, we have that, the vertex is

and the leading coefficient is

We substitute the vertex and the leading coefficient into the vertex form to get:

We simplify to get:

The graph of this function is shown in the attachment.

they are simplified

step-by-step explanation:

a.for lorena 14 hours makes $126   for 16 hours she makes 144

for julie 6 hours makes $72 for 21 hours its $252

b. julie makes more money than lorena julie makes $12 an hour and lorena makes $9  

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