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Write the equation of the exponential function in the form passing through the points and . Then sketch a graph of the function.

Substitute the points into the equation.

Solve for , then substitute that into the other equation and solve for .

Once you have solved for , substitute that value back into one of the original equations and solve for .

Check your work using the eTool below. Does your equation pass through the two points plotted on the graph?
Click the link at the right to view full eTool version: Int1 10-14 HW eTool.