Answer:
-8
Step-by-step explanation:
Given that x and y are two variables. they are related by the function
y =8-2x
Since x and y are related, given one value we can find the other using this equation.
In our question, given that x =8
Substitute x value in the equation
y = 8-2x
y =8-2(8) = -8
Hence answer is -8:
Verify: We verify by putting -8 for y and check whether x =8
-8=8-2x
Or 2x = 16
x =8
Verified
3. The answer is 18 because 12➗4= 3 so 6*3=18
The slope-intercept form:
![y=mx+b](https://tex.z-dn.net/?f=y%3Dmx%2Bb)
m - slope
b - y-intercept
The formula of a slope:
![m=\dfrac{y_2-y_1}{x_2-x_1}](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7By_2-y_1%7D%7Bx_2-x_1%7D)
We have two points (2, 0) and (-2, -4). Substitute:
![m=\dfrac{-4-0}{-2-2}=\dfrac{-4}{-4}=1](https://tex.z-dn.net/?f=m%3D%5Cdfrac%7B-4-0%7D%7B-2-2%7D%3D%5Cdfrac%7B-4%7D%7B-4%7D%3D1)
Therefore we have the equation of a line
![y=1x+b\to y=x+b](https://tex.z-dn.net/?f=y%3D1x%2Bb%5Cto%20y%3Dx%2Bb)
Put the coordinates of the point (2, 0) to the equation:
<em>subtract 2 from both sides</em>
![-2=b\to b=-2](https://tex.z-dn.net/?f=-2%3Db%5Cto%20b%3D-2)
Answer: ![\boxed{y=x-2}\to\boxed{3)}](https://tex.z-dn.net/?f=%5Cboxed%7By%3Dx-2%7D%5Cto%5Cboxed%7B3%29%7D)
Solving
S = 3F - 24
for F gives
S + 24 = 3F
(S + 24)/3 = F
The best choice is the last one:
F = (S + 24)/3
Answer:
128
Step-by-step explanation: