Answer:
t - 7
Explanation ;
decreased means to take away; subtract !
If two lines have the same slope, then they are parallel. Slope is indicated by the number before the variable, in this case, “x”. The line given and “D” have the same number before the variables, therefore the line and “D” are parallel.
Y=2x+4, the slope is 2, A(0,4)-y intercept
y=x+2, the slope is 1, B (0,2)- y intercept
the system is 2x-y=-4
-x+y= 2
-----------
x= -2
y=0 is the solution ( only one)