You can use the following basic syntax to plot an equation or function in R:

**Method 1: Use Base R**

curve(2*x^2+5, from=1, to=50, , xlab="x", ylab="y")

**Method 2: Use ggplot2**

library(ggplot2) #define equation my_equation <- function(x){2*x^2+5} #plot equation ggplot(data.frame(x=c(1, 50)), aes(x=x)) + stat_function(fun=my_equation)

Both of these particular examples plot the equation **y = 2x ^{2} + 5**.

The following examples show how to use each method in practice.

**Example 1: Plot Equation in Base R**

Suppose you’d like to plot the following equation:

y = 2x^{2}+ 5

You can use the following syntax in base R to do so:

curve(2*x^2+5, from=1, to=50, , xlab="x", ylab="y")

This produces the following plot:

If you’d like to plot points instead, simply specify type=”p” in the **curve()** function:

curve(2*x^2+5, from=1, to=50, , xlab="x", ylab="y", type="p")

This produces the following plot:

**Example 2: Plot Equation in ggplot2**

Suppose you’d like to plot the following equation:

y = 2x^{2}+ 5

You can use the following syntax in ggplot2 to do so:

library(ggplot2) #define equation my_equation <- function(x){2*x^2+5} #plot equation ggplot(data.frame(x=c(1, 50)), aes(x=x)) + stat_function(fun=my_equation)

This produces the following plot:

Notice that this plot matches the one we created in the previous example in base R.

**Note**: To plot a different equation, simply change the values defined for the **my_equation** variable.

**Additional Resources**

The following tutorials explain how to perform other common tasks in R:

How to Add a Regression Equation to a Plot in R

How to Create an Interaction Plot in R

How to Create a Residual Plot in R