Freddy drew a plan for a rectangular piece of material that will use for a blanket. Three of the vertices are (-1.9,-3.4), (-1.9,1.4), and (4.8,1.4). What are the coordinates of the fourth vertex? I need help someone!

the monthly balance will be $75,000

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18