For any real number $k,$ the graph of
\[y = 7x^2 + kx - 4k\]passes through a fixed point $(a,b).$  Find $(a,b).$
Question:
For any real number $k,$ the graph of
\[y = 7x^2 + kx - 4k\]passes through a fixed point $(a,b).$  Find $(a,b).$
Answer:
Let's think step by step.

user
(4,112)
For any real number $k,$ the graph of
\[y = 7x^2 + kx - 4k\]passes through a fixed point $(a,b).$  Find $(a,b).$
train