Which of the following equations is of a parabola with a vertex at (1, -2)? y = (x - 1)2 - 2 y = (x - 1)2 + 2 y = (x + 1)2 - 2 y = (x + 1)2 + 2

Step-by-step explanation:

Givens

The explicit form of a parabola is

Where is the vertex.

So, we know that . Replacing these values, we have the following expression

Therefore, the right answer is the first choice

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

answer is because 4×10=40

and 98×4= is 392

40,392