First 6 rows of Dataset

head(mtcars)

                   mpg cyl disp  hp drat    wt  qsec vs am gear carb
Mazda RX4         21.0   6  160 110 3.90 2.620 16.46  0  1    4    4
Mazda RX4 Wag     21.0   6  160 110 3.90 2.875 17.02  0  1    4    4
Datsun 710        22.8   4  108  93 3.85 2.320 18.61  1  1    4    1
Hornet 4 Drive    21.4   6  258 110 3.08 3.215 19.44  1  0    3    1
Hornet Sportabout 18.7   8  360 175 3.15 3.440 17.02  0  0    3    2
Valiant           18.1   6  225 105 2.76 3.460 20.22  1  0    3    1

• To use interactive plot to examine relationship between mpg and all other variables in the MTCARS dataset

   output$fit <- renderPrint({
        summary(fit())
    })
    
      output$mpgPlot <- renderPlot({
        with(dataset, { 
          plot(as.formula(formula()))
          abline(fit(), col="blue")
        })
    })

For more details on the assignment please visit www.coursera.com and look into the Data Products course

Thank you