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

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 Algebra: Graphs, graphing equations and inequalities Solvers Lessons Answers archive Quiz In Depth

 Question 293066: how to determine if (2,-1) are solutions to 4r+3s=5 Click here to see answer by stanbon(57967)

 Question 293245: Find the equation of each line. write each answer in slope intercept form. The line in parallel to -3x + 2y= 9 and contains the point (-2,1) Click here to see answer by Alan3354(31522)

 Question 293237: How would I graph the equation f(x)=-3(x+1)^2? I know the vertex is (-1,0)and the equation of the line of symmetry is -1. I just can't figure out how it should look on a graph (parabola opening up or down)? Click here to see answer by jim_thompson5910(28715)

 Question 293265: Write the following equation in function form. Then graph it. 2y+3x=2 Click here to see answer by jim_thompson5910(28715)

 Question 293292: Sara bowled 136 and 189 in her first two games. What must she bowled in her third game to have an average of at least 170? Write the inequality and solve this problem. Click here to see answer by richwmiller(9144)

 Question 293295: The cost of producing DVD's is given by the function C(x)=10x+40. In the function what is the y-intercept and what does it represent? What is the slope of the function and what does the slop represent? Click here to see answer by richwmiller(9144)

 Question 293443: x + 5y = 25 what is the y intercept? (type and ordered pair) Click here to see answer by richwmiller(9144)

 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(3504)

 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(9144)

 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(28715)

 Question 293948: How do you graph the inequality; Y<-1 on a graph? Click here to see answer by Fombitz(13828)

 Question 294042: solve the system of equation by graphing y=2x-1 y=-x+5 Click here to see answer by Alan3354(31522)

 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(12270)

 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(31522)

 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(9144)

 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(9144)

 Question 294464: describe how to graph the line 4x+5y=20. use any method Click here to see answer by Fombitz(13828)

 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(8999)

 Question 294529: How do you find out what the slope is of a line Click here to see answer by nyc_function(2733)

 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(9144)

 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(31522)

 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(2825)

 Question 294740: write the equation of the line passing through: (2, -3) and (6,2) Click here to see answer by jim_thompson5910(28715)

 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(31522)

 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(9144)
 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(31522)
 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(12730)

 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(13828)

 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 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 richwmiller(9144)

 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(9144)

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