Alexis has a rectangular piece of red paper that is 4 centimeters wide. it’s length is twice it’s width. she glues a rectangular piece of blue paper on top of the red piece measuring 3 centimeters by 7 centimeters. how many square centimeters of red paper will be visible on top?

step-by-step explanation:

y = | -2(-2) |     →     y = | 4 |     →     y = 4       ⇒   (-2, 4)

y = | -2(-1) |     →     y = | 2 |     →       y =   2       ⇒   (-1, 2)    

y = | -2(0) |     →     y = | 0 |     →       y = 0         ⇒   (0, 0)

y = | -2(1) |   c →     y = | -2 |     →     y =   2         ⇒   (1, 2)    

y = | -2(2) |     →     y = | - 4 |     →     y =   4         ⇒   (2, 4)  

what? that isnt a question

step-by-step explanation:

- (2, -7)

- lines r and s and lines t and u must be parallel