Answer:
B 0
Step-by-step explanation:
r is a horizontal line
horizontal lines are of the form y= constant
The slope for horizontal lines are 0
Parallel lines have the same slope.
Answer:
Age of Lee = y years
Age of Toby = (y - 8) years
Sum of their ages < 41
or, y +y - 8 < 41
or, 2y - 8 < 41
Adding '8' on both sides,
or, 2y - 8 + 8 < 41
or, 2y < 41
Answer:
![y=\frac{47}{14}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B47%7D%7B14%7D)
Step-by-step explanation:
Given
![-10\left(-\frac{1}{2}\right)+\left(-\frac{7}{2}\right)+7y=25](https://tex.z-dn.net/?f=-10%5Cleft%28-%5Cfrac%7B1%7D%7B2%7D%5Cright%29%2B%5Cleft%28-%5Cfrac%7B7%7D%7B2%7D%5Cright%29%2B7y%3D25)
Required
Solve for y
![-10\left(-\frac{1}{2}\right)+\left(-\frac{7}{2}\right)+7y=25](https://tex.z-dn.net/?f=-10%5Cleft%28-%5Cfrac%7B1%7D%7B2%7D%5Cright%29%2B%5Cleft%28-%5Cfrac%7B7%7D%7B2%7D%5Cright%29%2B7y%3D25)
Open brackets
![\frac{10}{2}-\frac{7}{2}+7y=25](https://tex.z-dn.net/?f=%5Cfrac%7B10%7D%7B2%7D-%5Cfrac%7B7%7D%7B2%7D%2B7y%3D25)
Collect Like Terms
![7y=25 -\frac{10}{2}+\frac{7}{2}](https://tex.z-dn.net/?f=7y%3D25%20-%5Cfrac%7B10%7D%7B2%7D%2B%5Cfrac%7B7%7D%7B2%7D)
Take L.C.M
![7y=\frac{50-10+7}{2}](https://tex.z-dn.net/?f=7y%3D%5Cfrac%7B50-10%2B7%7D%7B2%7D)
![7y=\frac{47}{2}](https://tex.z-dn.net/?f=7y%3D%5Cfrac%7B47%7D%7B2%7D)
Divide both sides by 7
![y=\frac{47}{2*7}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B47%7D%7B2%2A7%7D)
![y=\frac{47}{14}](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B47%7D%7B14%7D)
Answer:
inverse = -x+4
Step-by-step explanation:
y=-x+4
x=-y+4
-4 -4
x-4/-=-y/-
-x+4=y