# 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 615873: find the slope of the line that passes trough each pair of points. (12,10) and (3,9). (-4,11) and 5,2) (4,-4) and (3,-1) Click here to see answer by jim_thompson5910(28598)

 Question 616204: How would I solve the inequality and graph g-10>3? Click here to see answer by solver91311(16897)

 Question 616282: What is the slope of the line through the points (2,-6)(9,13) Click here to see answer by lwsshak3(6521)

 Question 616303: Graph the lines x=1 and y =-2 on the same coordinate system. Where do these lines intersect? Click here to see answer by jim_thompson5910(28598)

 Question 616541: Which ordered pair is a solution of the equation 2x − y = 9? Click here to see answer by lynnlo(4164)

 Question 616656: which equation describes the line that contains the points (-1, -8) and (-9, -21)? 1. (y+8)=13/8(x+1) 2. y=3x-8 3. 2y-18x=5 Click here to see answer by stanbon(57387)

 Question 616719: Are the lines 2x-5y=0 and y+3=5/2x parallel, perpendicular or neither Click here to see answer by richwmiller(9143)

 Question 616733: Find the value of y so that the line passing through the two points has a given slope (2,y)(11,8) Click here to see answer by nerdybill(6962)

 Question 616989: Graph the two equations to solve the system. What is the solution? 3x + 2y = 6 and y = -3/2x -1 (I am honestly confused about this, and I don't know what to do. I've tried plugging in an x y coordinate that worked with one of the equations; which took up nearly two hours. Thank you!) Click here to see answer by Alan3354(30993)

 Question 617162: what's the value of x/5 + 3y^2 - Z if x=30 y=2 z=-2 Click here to see answer by vleith(2825)

 Question 617266: Looking for someone to help on this. I tried it but am hoping to cross check it to see if I am doing it right. Thanks for any help. 12x + 7 - 3x = 56x + 9 Click here to see answer by nerdybill(6962)

 Question 617313: Can some one help on this I need to show how to find the intercept and state what they are for the following. 3x + 11 - x =20 - 6y +9 Thanks! Click here to see answer by josmiceli(9697)

 Question 617500: I need to find the equation for the line, in general from, with the given properties. (-8,1) (-6,-2) i do have the answer, but i don't know how to solve it. I guessed the answer. Click here to see answer by stanbon(57387)

 Question 617609: Which of the following points does NOT lie on the graph of the following equation? 7x + -5y = -14 Click here to see answer by stanbon(57387)

 Question 617631: I need help to solve this problem I need to solve for 3 points . Click here to see answer by Alan3354(30993)

 Question 617633: how to draw a graph of equations x-y>0 x+y>0 Click here to see answer by stanbon(57387)

 Question 617649: The available parking area of a parking lot is 900 square meters. A car requires 6 square meters of space and a bus requires 30 square meters of space. The attendant can handle no more than 70 vehicles. Let c represent the number of cars, and b represent in the number of buses. Write system of inequalities to represent the number of cars and buses that can be parked on the lot. Draw the graph showing the feasible region. If the parking fees are \$35.00 for cars and \$30.00 for buses, how many of each type of vehicle should attendant accept to maximize income? What is the maximum income? Parking fees for special events are \$27.00 for cars and \$25.00 for buses. How many of each vehicle should the attendant accept during a special event to maximize income? Whats the maximum income? Click here to see answer by solver91311(16897)

 Question 617719: There is one homework question I am stuck on and cannot understand what I am doing wrong. We are worknig on graph shifts. The question is, At a certain vineyard it is found that each grape vine produces about 10 pounds of grapes in a season when about 800 vines are planted per acre. For each additional vine that is planted, the production of each vine decreases by about 1 percent. So the number of pounds of grapes produced per acre is modeled byA(n)=(800+n)(10-0.01n) where n is the number of additional vines planted Find the number of vines that should be planted to maximize grape production. I have come up with A(n)= -0.01(n+100)^2+8100 and put in the answer of 100, 8100, 800 and many others and nothing is right. I don't understand what I am doing wrong. Click here to see answer by solver91311(16897)
 Question 617719: There is one homework question I am stuck on and cannot understand what I am doing wrong. We are worknig on graph shifts. The question is, At a certain vineyard it is found that each grape vine produces about 10 pounds of grapes in a season when about 800 vines are planted per acre. For each additional vine that is planted, the production of each vine decreases by about 1 percent. So the number of pounds of grapes produced per acre is modeled byA(n)=(800+n)(10-0.01n) where n is the number of additional vines planted Find the number of vines that should be planted to maximize grape production. I have come up with A(n)= -0.01(n+100)^2+8100 and put in the answer of 100, 8100, 800 and many others and nothing is right. I don't understand what I am doing wrong. Click here to see answer by Theo(3464)

 Question 617983: 1)y=-x-12 (-7, ) a)(-7,-5) b)(-7,5) c)(-7,-9) d)(-7,9) 2) y=-x+1 (-4, ) 3) 36x+9y=15 (4/9, ) Click here to see answer by Edwin McCravy(8909)

 Question 618081: find the x-intercept and y-intercept of the line given by the equation 6x-8y=7 Click here to see answer by vleith(2825)

 Question 618014: Think of a real-life situation where a graph would have no x- or y-intercept. Will what you say about the line always be true in that situation? Click here to see answer by richard1234(5390)

 Question 618087: Need assitance on how to do the following problem on my TI-84 Plus Graph and find the equation of the line from the given information The line that passes through the points (-2,1) and (3,-2). Click here to see answer by lwsshak3(6521)

 Question 618141: Write an equation in slope-intercept form for a line with a slope of -4 and y-intercepts of 9? In not sure where to start on the question I would appreciate it. Thank you! Click here to see answer by solver91311(16897)

 Question 618170: Let f (x) = . Find the average rate of change from x = -6 to x = 15. Round your answer to 2 decimal place. Click here to see answer by solver91311(16897)

 Question 618167: Find the slope of the line passing through (-2, 17) and (-7, 4). Click here to see answer by solver91311(16897)

 Question 618231: how do i work the following problem on my t1 84? graph and find the equation of the line from the given information. the line that is perpendicular to the line 3x-y=5 and passes through the point (-2,-2) Click here to see answer by josmiceli(9697)

 Question 618230: How would i work the following problem on my T1 84? graph and find the equation of the line from the given information. The line that is parallel to the line 2x + 3y=4 and passes through point (1,2). Click here to see answer by Edwin McCravy(8909)

 Question 618410: What are the intercepts of the equation -2x + 5y = 20? Click here to see answer by ewatrrr(10682)
 Question 618410: What are the intercepts of the equation -2x + 5y = 20? Click here to see answer by solver91311(16897)

 Question 618528: Solve the system of equations by graphing. x+y=4 y-x=4 Please show points, how to graph the points and the point at where they meet or intersect (if they do). Click here to see answer by Alan3354(30993)

 Question 618529: Solve the system of equations by graphing. x-2y=-4 x+2y=8 Please show points, how to graph the points and the point at where they meet or intersect (if they do). Click here to see answer by Alan3354(30993)