Answer:
(5,3)
Step-by-step explanation:
add the equations to eliminate to x's and get 8y=24
divide both sides by 8 to get y=3
then substitute in -2x+3(3)=-1 to solve for x
so x=5 so the solution is (5,3)
Answer:
x = 4
Step-by-step explanation:
Given y varies inversely as x then the equation relating them is
y =
← k is the constant of variation
To find k use the condition y = 8 when x = 10
k = yx = 8 × 10 = 80
y =
← equation of variation
When y = 4, then
4 =
( multiply both sides by x )
4x = 80 ( divide both sides by 4 )
x = 20
10 - 2^2 = 6.
So the range is [6, 6].
The answer would be: x+2y
First, combine the like terms.
-x and 2x
Now your equation looks like this:
x+y+y
Now combine the y like terms.
y and y and you get 2y
Then you are left with your answer: x+2y
Hope this helps! :3