Algebra-1

The y-intercept of a function is the value of the function when x = 0.

To find the y-intercept for our function, we evaluate f(0): f(0) = -(a + 4)⋅ 6⁰ = -(a + 4) ⋅ 1 = -(a + 4).

Thus, the y-intercept is simply -(a + 4).

We want the y-intercept to be less than 6: -

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