Answer:
y=-x+5
Step-by-step explanation:
The equation of a line in the form:
y=mx+c is called the slope intercept form of a line.
4x+4y=20
⇒ 4y=-4x+20
on dividing by 4 on both sides,we get
y=
⇒ y=-x+5
Hence, the slope intercept form of 4x+4y=20 is:
y= -x+5
b) 4x^9
c) -12 over x^2
d) -2x^9
B. 108
C.10–8
D.10–7
C(x) = 6x + 3 (in USD)
Given:
Question:
The equation that represents cost, C(x), ice skating as a function of x, the number of hours of skating.
The Process:
We try solving a word problem about the single variable equation.
Step-1: calculate the cost of skates per hour.
Let the rate of using the skating rink be R per hour. We will seek the value of R.
On that day Gillian rented skating for 3 hours and paid $ 21. The equation that will determine this given by:
Both sides subtracted by 3.
We isolate R on the left side. Both sides are divided by 3.
Hence, the fee of skates per hour is
Step-2: determine the cost equation for ice skating
Let x as the number of hours of skating.
Recall the fee of skates per hour is $6 and the fee to rent is $3 for the day.
Thus, the equation which represents the cost of ice skating as a function of x, the number of hours of skating, will be given by:
(in USD)
Keywords: the ice skating rink, charges an hourly fee, Gillian rented skates, the equation represents the cost, C(x), a function of x, the number of hours of skating, a word problem, the single variable equation
What is the value of f(12)?
Answer:
f=1/18x+1/4 x=-9/2+18f