Answer:
x = 11, y=-½
Step-by-step explanation:
Simultaneous equations - subtract the first equation from the second.
x + 4y = 9
-(x - 2y = 12)
6y = -3
y = -½
Substitute y
x + 4(-½) = 9
x + -2 = 9
x = 11
Answer:
(12,3)=x1,y1
m=-1/4
we have,
y-y1=m(x-x1)
y-3=-1/4(x-12)
4y-12=-x+12
x+4y-21=0 is the required eqn
The answer is b because all of the other numbers in the parentheses are less then one so there can’t be a growth if the number is less than one
