The vertex of a parabola is the point where the parabola crosses its axis of symmetry. Therefore, the coordinates of the vertex is (2,4).
Answer:
-9, 2/5
Step-by-step explanation:

-4x^5 + 2x^4 + x^3 + 3x^2 + 9x
Hope this helps.
Answer:y=2x+1
Step-by-step explanation:
y
−
y
1=
m(
x
−
x
1
)
.
Slope-intercept form:
y
=
2
x
+
1