Which equation has a graph that is a parabola with a vertex at (–1, –1)?
a. y = (x – 1)2 + 1
b. y = (x – 1)2 – 1
c. y = (x + 1)2 + 1
d. y = (x + 1)2 – 1

Which of the following is the correct equation for this function? a. y= (x+4)(x+2) b. y=x^2+ 3x – 2 c. y+ 2 = – 2(x+3)^2 d. y+ 2 = 2(x+3)^2

The american academy of pediatrics wants to conduct a survey of recently graduated family practitioners to assess why they did not choose pediatrics for their specialization. provide a definition of the population, suggest a sampling frame, and indicate the appropriate sampling unit.

What does independent variable and dependent variable mean in math?