Correct it is the right answer
Answer:
vertex = (0, -4)
equation of the parabola:
Step-by-step explanation:
Given:
- y-intercept of parabola: -4
- parabola passes through points: (-2, 8) and (1, -1)
Vertex form of a parabola:
(where (h, k) is the vertex and is some constant)
Substitute point (0, -4) into the equation:
Substitute point (-2, 8) and into the equation:
Substitute point (1, -1) and into the equation:
Equate to find h:
Substitute found value of h into one of the equations to find a:
Substitute found values of h and a to find k:
Therefore, the equation of the parabola in vertex form is:
So the vertex of the parabola is (0, -4)
I think its B even though they are not in the same order and form they are still the same just in different ranges
Answer:
1/2
Step-by-step explanation:
Find two easy-to work with points
-3,2 and -1,3
slope, m = (y1-y2 ) / ( x1-x2)
(2-3) / ( -3 - -1) = -1/(-2) = 1/2
( it does not matter which point you select as x1 ,y1 or x2, y2 )
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