What is the y-intercept of the line shown?

A coordinate plane is shown. A line passes through the y-axis at -1 and through the point 1 comma 2.
−1
0
0.5
1

Aline on the wall and a line on the floor are skew. always, sometimes, or never?

Someone answer asap for ! a discount store’s prices are 25% lower than department store prices. the function c(x) = 0.75x can be used to determine the cost c, in dollars, of an item, where x is the department store price, in dollars. if the item has not sold in one month, the discount store takes an additional 20% off the discounted price and an additional $5 off the total purchase. the function d(y) = 0.80y - 5 can be used to find d, the cost, in dollars, of an item that has not been sold for a month, where y is the discount store price, in dollars. create a function d(c(x)) that represents the final price of an item when a costumer buys an item that has been in the discount store for a month. d(c(x)) =

Find the volume of the solid bounded by the plane z=0 and the paraboloid z=1-x^2 –y^2