Answer: The answer is 1, 2
Step-by-step explanation:
okay so, first what is the slope of the line? you have stated it is -1.
so now we have a point on the line (x1,y1) = (4, -9), so now we can use:
y-y1 = m(x-x1)
y - (-9) = -1 (x - 4)
y + 9 = -x + 4
y = -x + 4 -9
y = -x -5
Let's check. If x = 4, then
y = - (4) -5 = -9
seems to be correct
As it has been given that 
, 
.
We need to find the value of the following:
(i) 
, substituting the value of 'x' and 'y' in the expression, we get:
So, 
(ii) 
, substituting the value of 'x' and 'y' in the expression, we get:
So, 
(iii) 
, we need to substitute the value of 'x' and 'y' in the expression, for this, we can use distributive property of multiplication that says,
Using the distributive property of multiplication:
Now, we know that 
We get, 
Therefore, =
.
(iv) We have, 
, we need to substitute the value of 'x' and 'y' in the expression, we get:
Again, we can use distributive property of multiplication that says,
So,
since, 
we get,
Therefore,
