Question

The graph of which equation is shown below?

Answer 1

y = −x2 + 2x − 3
y = −x2 − 2x − 3
y = x2 + 2x − 3
y = x2 − 2x − 3

Answer 2

well its a parabola with a vertex at (-1, -4) and zeros at x = -3 and 1

the parabola is concave up so that eliminates equations 1 and 2... -x^2 means concave down.

the line of symmetry is x = -1

so for a parabola \[y =ax^2 + bx + c\]

the line of symmetry is \[x =\frac{-b}{2a}\]

so you need to find which line gives a value of -1

so \[-1 = \frac{-b}{2a}\]

which probably means a and b have the same sign...both positive or both negative

hope this helps

Answer 3

So i got c

Answer 4

@campbell_st

Answer 5

correct.

Answer 6

Sweet

Answer 7

there are just lots of ways to get the equation. I think I showed you about 3 in the solution above.