Answer:

Step-by-step explanation:
Let
x ----> represents the number of subscriptions she sells
f(x) ---->represent her paycheck amount for the week
we know that
The linear function in slope intercept form is equal to

where
m is the slope or unit rate of the linear function
b is the y-intercept or initial value of the linear function
In this problem we have that
The slope is equal to

The y-intercept is equal to
---> value of f(x) when the value of x is equal to zero
substitute

Answer:
What is the function of Y 7?
y=7 is a straight line with zero slope and y-intercept 7 as shown below. Hence its domain (all allowed x-values) is all real numbers, and its range (all allowed y-values) is only 7.
Step-by-step explanation:
-3y = x...so we sub in -3y for x in the other equation
-x + 7y = 70
-(-3y) + 7y = 70
3y + 7y = 70
10y = 70
y = 70/10
y = 7
so we sub in 7 for y in either of the original equations to find x
-3y = x
-3(7) = x
-21 = x
so ur solution is (-21,7)
The number is -240 because -240 divided by 4 is -60
800/16 in the simplest form is basically divide 800 by 16 which equals to 50,