The equation that relates the x and y values in the chart above is: y = 7x. It can be observed that each value of x when multiplied with a factor of 7 gives the corresponding y value. For example, for x equals 1, y is equal to 7 times 1 which gives a value of 7. For x equals 5, the y value is equal to 7 times 5 which gives the number 35.