# How do you graph an exponential graph?

## How do you graph an exponential graph?

Graphing Exponential Functions

1. Replacing x with −x reflects the graph across the y -axis; replacing y with −y reflects it across the x -axis.
2. Replacing x with x+h translates the graph h units to the left.
3. Replacing y with y−k (which is the same as adding k to the right side) translates the graph k units up.

How do you graph exponential functions examples?

An exponential growth function can be written in the form y = abx where a > 0 and b > 1. The graph will curve upward, as shown in the example of f(x) = 2x below….

1. Graph y = 3x
2. Graph y = −(3/2)x
3. Graph y = 2 × 5x
4. Graph y = −2 ÷ 5x
5. Graph y = 3x − 2

What is a exponential graph?

At the most basic level, an exponential function is a function in which the variable appears in the exponent. The most basic exponential function is a function of the form y=bx y = b x where b is a positive number. When b>1 the function grows in a manner that is proportional to its original value.

### How do you write an exponential growth function?

Exponential Function exponential growth or decay function is a function that grows or shrinks at a constant percent growth rate. The equation can be written in the form f(x) = a(1 + r)x or f(x) = abx where b = 1 + r.

How do you know if a graph is exponential?

Graphs of Exponential Functions

1. The graph passes through the point (0,1)
2. The domain is all real numbers.
3. The range is y>0.
4. The graph is increasing.
5. The graph is asymptotic to the x-axis as x approaches negative infinity.
6. The graph increases without bound as x approaches positive infinity.
7. The graph is continuous.

How do you tell if a graph is exponential or logarithmic?

The inverse of an exponential function is a logarithmic function. Remember that the inverse of a function is obtained by switching the x and y coordinates. This reflects the graph about the line y=x. As you can tell from the graph to the right, the logarithmic curve is a reflection of the exponential curve.

#### How is the graph of an exponential function defined?

The graph is nothing but the graph y = log3(x) translated 2 units to the right and 4 units up. As x tends to 2 , the function approaches the line x = 2 but never touches it. As x tends to ∞ the value of the function also tends to ∞ . That is, the function is defined for real numbers greater than 2 .

How does the base affect the exponential function?

Reading the graph from left to right, it is interpreted as decreasing exponentially. The base affects the rate at which the exponential function decreases or decays. Below we have graphed y = (1 2)x, y = (1 3)x, and y = ( 1 10)x on the same set of axes.

How to calculate the exponential function in Excel?

+ 2.8 graphically. Round to the nearest thousandth. + 2.8 next to Y1 =. Then enter 42 next to Y2=. For a window, use the values –3 to 3 for x and –5 to 55 for y. Press [GRAPH]. The graphs should intersect somewhere near x = 2. For a better approximation, press [2ND] then [CALC].

## How are exponential functions used in real world?

As we discussed in the previous section, exponential functions are used for many real-world applications such as finance, forensics, computer science, and most of the life sciences. Working with an equation that describes a real-world situation gives us a method for making predictions. Most of the time, however, the equation itself is not enough.