As the mapping suggests, the first (x) coordinate is decreased by 3, and the second (y) coordinate is increased by 2. So, given the inputs, you have
And yes, this rule is a function: it has a starting set (the domain), which is all possible couples 
, and a landing set (the codomain), which is again composed by the couples . Since for every point in the domain you have one and only one output, this rule is a function.
Answer:
(- 3, - 2 )
Step-by-step explanation:
Given the 2 equations
- 2x + 5y = - 4 → (1)
3x + 4y = - 17 → (2)
Multiplying (1) by 3 and (2) by 2 and adding the result will eliminate x
- 6x + 15y = - 12 → (3)
6x + 8y = - 34 → (4)
Add (3) and (4) term by term
(- 6x + 6x) + (15y + 8y) = (- 12 - 34), that is
23y = - 46 ( divide both sides by 23 )
y = - 2
Substitute y = - 2 in either of the 2 equations.
Substituting in (2)
3x - 8 = - 17 ( add 8 to both sides )
3x = - 9 ( divide both sides by 3 )
x = - 3
Solution is (- 3, - 2 )
X is a normal random variable with a mean<span> of 120 and a </span>standard deviation<span> of 20. </span>Determine<span> the </span>probability<span> that X is greater than 135. Problem 3.</span>Find<span> a value of c so that P( -c < Z < c) = .45.</span>
Answer:
x-1
Hope it helps
Iam sure about the answer
