Which of the following equations is of a parabola with a vertex at (0, -3)?
y = (x - 3)^2
y = (x + 3)^2
y = x^2 - 3
y = x^2 + 3

Third option is correct.

Step-by-step explanation:

Since we have given that

We need a parabola with a vertex at (0,-3)

If we select the equation:

When we put x = 0, we get

And similarly, when we put y = -3, we get

Hence, third option is correct.

d

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~coco

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18