Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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Question 293503: For each equation, state the x-intercept and y-intercept. Then graph the equation using the intercepts and a third point.
Helen's Health Foods usually sells 400 cans of ProPac Punch per week when the price is $5 per can. After experimenting with prices for some time. Helen has determined that the weekly demand can be found by using the equation d=600-40p, where d is te number of cans and p is the price per can.
a)Will Helen sell more or less Muscle Punch if she raises her price from $5?
b)What happens to her sales every time she raises her price by $1?
c)Graph the equation.
d)What is the maximum price that she can charge and still sell at least one can?
Can you please help me with this problem? thank you
Click here to see answer by Theo(13342)

Question 293609: write the equation of the line that passes through the following points (6,-5),(6,12)
Click here to see answer by richwmiller(17219)

Question 293607: write the equation of the line that passes through the following points (5, -3),(8,4)
Click here to see answer by jim_thompson5910(35256)

Question 293948: How do you graph the inequality; Y<-1 on a graph?
Click here to see answer by Fombitz(32388)

Question 293989: how do I graph f(x) _> x^3-x^2-12x
Click here to see answer by Fombitz(32388)

Question 294042: solve the system of equation by graphing
y=2x-1
y=-x+5
Click here to see answer by Alan3354(69443)

Question 294141: Dan receives $375 per week for selling new and brand new and used cars at a car dealership in oak lawn, illinois. In addition, he receives 5% of the profit on any sales that he generates. Write a linear equation that relates Dan's weekly salary S when he has sales that generate profit of x dollars.
Click here to see answer by mananth(16946)

Question 294155: y=(x-1)^
Click here to see answer by Alan3354(69443)

Question 294130: Find the slope of the line containing the given pair of points. If the slope is undefined, state so.
(1, 2) and (9, 12) please help
Click here to see answer by Alan3354(69443)

Question 294123: Show how to determine if the following pairs of lines are parallel without graphing: 2x-4y=16
3x=6y+18
Click here to see answer by scott8148(6628)

Question 294440: What is the slope of a line that is perpendicular to y=3/4x+2?
Click here to see answer by richwmiller(17219)

Question 294463: show how to determine if the following pairs of lines are parallel without graphing. 2x-y=16 and 3x=6y+18
Click here to see answer by richwmiller(17219)

Question 294464: describe how to graph the line 4x+5y=20. use any method
Click here to see answer by Fombitz(32388)

Question 294486: Hi would you please help me. I have been trying to do this but i keep getting it wrong. I need help as to graph on a number line.
-
Click here to see answer by Edwin McCravy(20055)

Question 294483: x-y=9
x+y=19

Click here to see answer by checkley77(12844)

Question 294529: How do you find out what the slope is of a line
Click here to see answer by nyc_function(2741)

Question 294554: Please help me determine the x- and y-intercepts of the given equation.
2x + y = 5

Click here to see answer by richwmiller(17219)

Question 294558: how can the graph y=x^2-8 be obtained from the graph y=x^2-8
Click here to see answer by richwmiller(17219)

Question 294577: What point do the lines represented by the equations 2x+y+1=0 and 4x+y-3=0 intersect

Click here to see answer by Alan3354(69443)

Question 294618: i dont understand how to get the answer, plot the points and shade. the question is : y>-4 . and i need to plot it on a graph and shade to one of the sides.
Click here to see answer by vleith(2983)

Question 294740: write the equation of the line passing through: (2, -3) and (6,2)
Click here to see answer by jim_thompson5910(35256)

Question 294816: graph the inequality y
Click here to see answer by Alan3354(69443)

Question 294816: graph the inequality y
Click here to see answer by Aust05(12)

Question 294924: Please find the x- and y- intercepts of the equation
x+y=4
Thank you
Click here to see answer by helpnalgebra(91)

Question 294938: I need to graph a line with slope -1/2 that pases through the point (0,2)
Thanks,
Click here to see answer by Alan3354(69443)

Question 295082: i need to know, by looking at this equation 3x-7y=-10, how do you know that this is a liner equation?
Click here to see answer by richwmiller(17219)

Question 295082: i need to know, by looking at this equation 3x-7y=-10, how do you know that this is a liner equation?
Click here to see answer by Alan3354(69443)

Question 295082: i need to know, by looking at this equation 3x-7y=-10, how do you know that this is a liner equation?
Click here to see answer by rfer(16322)

Question 295155: Find the intercepts, asymptotes, use limits to describe the behavior at the vertical asymptotes and analyze and draw the graph of f(x)=(x+1)/(x^2-3x-10)
Click here to see answer by Fombitz(32388)

Question 295254: Write a negation of the statement.
All dinosaurs were carnivores.

All dinosaurs were not carnivores.
Some dinosaurs were not carnivores.
Some dinosaurs were carnivores.
No dinosaurs were carnivores.

Click here to see answer by dabanfield(803)

Question 295269: Determine which, if any, of the three statements are equivalent.
I) If there is no food left on the table, then we have had dinner.
II) If we have had dinner, then there is no food left on the table.
III) If there is food left on the table, then we have not had dinner.

I, II, and III are equivalent
I and II are equivalent
II and III are equivalent
I and III are equivalent
None are equivalent

Click here to see answer by richwmiller(17219)

Question 295261: Construct a truth table for (~p q) ↔ p
Click here to see answer by jim_thompson5910(35256)

Question 295333: (3,4)m = -1/4
Need to write this as an equation

Click here to see answer by jim_thompson5910(35256)

Question 295507: solve the system of equations by graphing 3x-2y=-6
-3x-y=-12
Click here to see answer by oberobic(2304)

Question 295684: y = 6x + 41,
4x + 9y = -95
Solve using either elimination or substitution
Click here to see answer by Fombitz(32388)

Question 295726: 2x-5y=17 and y=2x+3 solve by substition

Click here to see answer by Aust05(12)

Question 295729: x-2y+z=6 x+2z=3 -y-3z=-1 solve the addition method

Click here to see answer by richwmiller(17219)

Question 295850: Form the inverse: If I eat a lot of sweets, then I will not feel well.
If I do not feel well, then I ate a lot of sweets.
If I do not eat a lot of sweets, then I will feel well.
If I feel well, then I did not eat a lot of sweets.
If I do not feel well, then I did not eat a lot of sweets.
If I feel well, then I did not eat a lot of sweets.

Click here to see answer by alicealc(293)

Question 295859: Determine which, if any, of the three statements are equivalent.
I) If there is no food left on the table, then we have had dinner.
II) If we have had dinner, then there is no food left on the table.
III) If there is food left on the table, then we have not had dinner.

I, II, and III are equivalent
I and II are equivalent
II and III are equivalent
I and III are equivalent
None are equivalent

Click here to see answer by richwmiller(17219)

Question 295994: Need help solving 4x=8 and 5y=15 using substitution or elimination, please!
Click here to see answer by richwmiller(17219)

Question 296038: What graph matches with the function? y = 2(x + 2)2 - 2
Click here to see answer by checkley77(12844)

Question 295980: graph using the slope and the y-intercept
2x-y=5
Click here to see answer by checkley77(12844)

Question 296166: Solve: x^2+ 5x+ 3= 0
Click here to see answer by jim_thompson5910(35256)

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