Question

In the xy-plane, what is the y-intercept of the graph of the equation y - 6 (x - 1) (x + 3)?

Answer 1

y - 6(x -1) (x + 3) = ?

One needs to know the other side of the equation

The y intercept occurs at x = zero

The equation can be written (x = 0) as

y = 6 (-1) 3 = -18 if the right side were initially zero