Gradient = rise/run = -1/2
Thus:
y = -1/2x + c
Solve for c:
Pick a point for the values of y and x
(2,-2)
-2 = -1/2 (2) + c
c = -2 + 2
c = 0
Thus the equation is
y = -1/2x
Answer:
i believe the answer is 1/9, sry if im wrong
Step-by-step explanation:
Answer:
Whenever
.
Step-by-step explanation:
We can play around with some numbers and develop some rules for this equation.
Note that the number 5 and -5 are used here, so let's try using 5 as a.

So 5 works. Let's try a random number like 3.

Okay, with this info we know that we might be able to develop one rule that
. Just to test, let's try 0, -3, and -5.

Zero works.

-3 works.

-5 works. Now, this might stop here making the equation
, so let's test a number outside of -5 - say -20.

Yes! This works, so a works for this equation as long as
.
Hope this helped!
Since x is our unknown number, on one side of our equation we will have the "<span>Subtracting two times a number from 10", and on the other will be -3. So,
-3=10-2x</span>
Answer:
P=16+2x
Step-by-step explanation:
The formula for finding the perimeter of a rectangle is P=2l+2w.
Plug the length of 8 and the width of x into the formula.
You'll get P=2(8)+2(x).
Multiply. 2•8=16 and 2•x=2x.
Your expression is P=16+2x.
I hope this helps.