Let T:R3→R2 be the linear transformation that first projects points onto the xy-plane (forgetting the z coordinate entirely) and then reflects around the line y=−x. Find the standard matrix A for T.

Medium sodas cost $1.25 and hot dogs cost $2.50. natalie’s group brought in pizzas but is buying the drinks at concession stand. how many medium sodas can natalie’s group buy with $20? make a table to show answer.

Use the distributive law to multiply. 3(4x + 5y + 6)

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]