Question

Use these parent functions.

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Which parent functions approach positive infinity as x decreases? Select all that apply.
A. Linear
B. Quadratic
C. Absolute value
D. Exponential
E. Square root
F. Cube root

Answer 1

B and C.

Reason: As x → −∞, x^2 → +∞ and |x| → +∞. The linear and cube-root go to −∞, the exponential goes to 0, and the square-root is not defined for large negative x.