Which geometric principle is used on the construction shown?

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

Is a positive integer raised to a negative power always positive

The amount spent on food and drink by 20 customers is shown below what is the modal amount spent and the median? 40 25 8 36 18 15 24 27 43 9 12 19 22 34 31 20 26 19 17 28