Answer:
for the first one y would be zero
for the second one c would be -13/3
The polynomial graph crosses the x-axis at two points and touches x-axis at one point. It indicates the graph has four roots:




The last two roots have equal value as the graph touches the x-axis (not crosses it)
The graph has three unique roots
It's the first one. That is a perfect square polynomial, which, when factored, will give you the same binomial twice, or multiplicity 2. It will factor to

, where the vertex (h, k), is (-9, 0).
True multiply both sides by 15