Question

Which graph represents an exponential function? PLEASE ANSWER FAST IM TIMED

Answer 1

Exponential graphs are increasing or decreasing graphs: as the value of x increases, the value of f(x) also increases Or as the value of x decreases , the value of f(x) also decreases.

1) The first graph is a Parabola .It represent a quadratic function.

2)The second graph is also an inverted parabola and represents a quadratic function.

3) The third graph is representing a Hyperbola.

4) The graph is representing a radical function.

5) The graph is representing an exponential function.

The last graph represent an exponential function.

Answer 2

Consider all graphs:

1. This is the graph of parabola that represents quadratic function $y=-x^2.$

2. This is the graph of hyperbola that represents function $y=-\dfrac{1}{x+2}+2.$

3. This is the square root's graph that represents function $y=\sqrt{x+2}.$

4. This is the graph of exponential function $y=-\left(\dfrac{1}{2}\right)^x+2.$

Answer: correct choice is D.