Answer:
-4
-7
21
Step-by-step explanation:
a coefficient is the number before the variable
The values of x and y are:
x y
2 1
5 2.5
7 3.5
Step-by-step explanation:
Given rule for function is:

As in the table,, we are given the values of y, which means we have to find x.
So,

so
for y = 1

For y = 2.5

For y = 3.5

so,
The values of x and y are:
x y
2 1
5 2.5
7 3.5
Keywords: Functions, input output
Learn more about functions at:
#LearnwithBrainly
so she saved $20 and that was 40% of the regular price, let's say the regular price is "x".
if 20 is 40%, what is "x" or namely the 100%?

Answer:
you are a wonderful person Brainly Brother
signed,
your Brainly Sister :D
X + y = 4
x - y = -6
--------------add
2x = -2
x = -2/2
x = -1
x + y = 4
-1 + y = 4
y = 4 + 1
y = 5
solution is : (-1,5)