Answer:
1.
2.
Step-by-step explanation:
Given
Variation: inverse Proportion
y = 7, x = 9
Required
- Write an equation connecting y and x
- Find y when x = 21
Given that thee variation is inversely proportional;
This implies that
Convert variation to equation
----------- Equation 1
Where k is the constant of variation
Substitute 7 for y and 9 for x in equation 1
Multiply both sides by 9
Substitute 63 for k in equation 1
Multiply both sides by x
Hence, the equation connecting x and y is
Solving for when x = 21
Substitute 21 for x in the above equation
Divide both sides by 21
Answer:
1. is answer D
2. is answer A
3. is answer C
4. is answer B
hope this helps ^-^
Step-by-step explanation:
Answer:
(3,6)
(4,7)
(5,8)
(6,9)
Step-by-step explanation:
Basically, you plug in the x value into the equation to get your y value.
<span>-3x+2y=5
Add 3x to both sides
2y= 3x + 5
Divide both sides by 2 so that the only thing remaining is the variable y.
Final Answer: y= 3/2x + 5/2</span>
Answer:
x = 4
Step-by-step explanation:
2x - y = 11
X + 3y = -5
Multiply the first equation by 3
3(2x - y )= 11*3
6x - 3y = 33
Add this to the second equation to eliminate y
6x - 3y = 33
X + 3y = -5
--------------------
7x = 28
Divide by 7
7x/7 = 28/7
x = 4