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19. Which statement regarding the graphs of the functions below is untrue?
h(x) = log2x
g(x) = (x - 0.5)(x + 4)(x - 2)
j(x) = -|4x - 2| + 3 (1)
(2) f(x), h(x), and j(x) have one y-intercept.
All four are functions, so they have at most one y-intercept. However, the log function has a domain of positive numbers, x > 0, so it will not have a y-intercept.
20. When g(x) is divided by x + 4, the remainder is 0. Given g(x) = x4 + 3x3 - 6x2 - 6x + 8, which conclusion about g(x) is true? (1
(2) g(-4) = 0
The polynomial can be divided by x + 4 without a remainder, meaning (x + 4) is a factor. This makes -4 a zero of the function.
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