The solution to the equation 3a + 7 = -2 graphically is a = -3
How to determine the solution to the equation
From the question, we have the following parameters that can be used in our computation:
3a + 7 = -2
To solve the equation by graphing, we plot the equation
The point where the line intersects the x-axis is the solution
The graph of the function is added as an attachment
From the graph, we have
a = -3
Hence, the solution to the equation is a = -3