Question

What is the vertex of the graph of y = 3x2 + 2x + 1?

Answer 1

We have that
y = 3x²+ 2x + 1

step 1

Group terms that contain the same variable, and move the constant to the opposite side of the equation

y -1= (3x²+ 2x)

step 2

Factor the leading coefficient

y -1= 3*(x²+ 2/3x)

step 3

Complete the square. Remember to balance the equation by adding the same constants to each side

y -1+(1/3)= 3*(x²+ (2/3)x+(4/36))

y-2/3=3*(x+2/6)²

the vertex is the point (-2/6, 2/3)------> (-0.33,0.67)

the answer is

(-0.33,0.67)

Answer 2

Answer:

B (-1/3,2/3)

Step-by-step explanation: