+687 here are the questions.
Contractor 3 gives Mrs. Solar the following fee table showing her charges for the contract work.
https://snag.gy/IPS06y.jpg
(a) What is the rate of change? What does this mean in a real-world context?
(b) Write an equation in point-slope form to represent the total cost, y, given x hours.
(c) Graph the equation written in Part (b).
(d) What is the y-intercept? What does this mean in a real-world context?
THESE ARE MY ANSWERS
https://snag.gy/WSNRGe.jpg
A. $60/hour. the contractor charges $60 for each hour of work.
B. y = 60x
C. I can't seem to plot this right. :(
D. the y-intercept is 0. This means the cost is $0 when the contractor does 0 hours of work.
+584 (c)I use desmos graphing calculator ,follow the link
https://www.desmos.com/calculator
then enter "60x"
you will see
https://www.desmos.com/calculator/regbvl4d0r
For ti calcuator you need change the min and max value of y to 0 and 180 to get the correct graph. PS: I am not a TI calculator user.
A easy way to graph y=60x by hand is treat 60 dollar as one unit ........
Written until this point , I realize you can convert 1 hour to 60 minute,and then the rate of change is 1 dollar per minute and the equation is y=x where y is charge fees in dollar and x is time in minute.
+129899 (C) To draw this, hoiuu....note that we have the points (0,0 ) , ( 2 , 120 ) and ( 3, 180)
Plot these points.....draw a line through them and stop the left side of the line at (0,0)
[ You can also plot (4, 240) and (5, 300) if you want to....your graph will "automatically" go through them !!!! ]
All the other answers are good !!!!
