Please help with these two !! Thank u smm!

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

Which describes the difference between the graph of f(x)=x^2 and g(x)=-(x^2-2)

The perimeter of a rectangular lot of land is 436 ft. this includes an easement of x feet of uniform width inside the lot on which no building can be done. if the buildable area is 122 ft by 60 ft, determine the width of the easement. select one: a. 9 feet b. 18 feet c. 4.5 feet d. 7 feet