The equation is
y = -(6/7)*x + 9
We just need to evaluate the function in x = 21
This means
y = -6*21/7 +9 = -6*3 +9 = -18 +9 = -9
(x,y) = (21,-9)
Answer:

Step-by-step explanation:


Answer
1) (4,6)
2) (5,5)
3) (2,6)
Step-by-step explanation:
Answer:
The rectangle has a width of 18 inches and a height length of 8 inches.
Step-by-step explanation:
The perimeter of a rectangle is described by the equation:

where <em>l</em> is width, <em>h</em> is height, and <em>p</em> is perimeter.
We're also told that the total perimeter is 52 inches.
We're also told that the length is six inches less than three times the width. We can express that as
.
We can plug that definition of w into the perimeter equation to find the length:

Now we can take that and the given perimeter, and substitute those into the perimeter equation to find the width:

So the width is 18