Worth 14 points read what it says there's 2 box's for every question will brainliest if right

Find the value of ax 4 ; a = 2, x = 1. select one: a. 2 b. 4 c. 1 d. 8

Solve the following pair of equations for x and y: ax/b_ by /a= a +b; ax - by = 2ab

Graph the system of equations on your graph paper to answer the question. {y=−x+4y=x−2 what is the solution for the system of equations? enter your answer in the boxes.