Which equation has a graph that is a parabola with a vertex at (-1, -1)?
O y = (x - 1)2+1
O y = (x - 1)2 - 1
O y = (x + 1)2 + 1
O y= (x + 1)2 - 1

the expected value of the random variable : 0, 1 and 2

step-by-step explanation:

omg what happend to your question? if you could edit this question i can

step-by-step explanation:

graph b

step-by-step explanation:

one solution- graph a (clear intercepting point.)

no solution- graph b (they're parallel, there will never be a point of interception.)

infinite solutions- graph c (all points intercept.)