We have loked at several general matrix transformations in module 1. answer the questions below about these
familiar matrices, and explain your answers.
a. what efect does the identity transformation have on the unit square? what is the area of the image?
confirm your answer using the determinant.
b. how does a dilation with a scale factor of k change the area of the unit square? calculate the determinant of a
matrix representing a pure dilation of k.
c. does a rotation with no dilation change the area of the unit square? confirm your answer by calculating the
determinant of a pure rotation matrix, and explain it

Can someone answer it, and plot it, for 20 points and brainliest answer? p.s. they're the same ! : )

Determine whether the quadrilateral below is a parallelogram. justify/explain your answer (this means back it up! give specific information that supports your decision. writing just "yes" or "no" will result in no credit.)

Someone answer this asap rn 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)) =