# 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 91665: Graph each inequality: 2x - y + 3 greater than or equal to 0 Click here to see answer by mathispowerful(115)

 Question 92109: how do i graph: and ... on the same coordinate plane? Click here to see answer by stanbon(57347)

 Question 90832: Solve the following system of linear inequalities by graphing. 3x – y < 2 x + y > 2 Click here to see answer by mathispowerful(115)

 Question 92178: A nursery uses two brands of fertilizer for rose bushes. Brand A costs \$3 per pound and provides 280 units of nutrients per pound. Brand B costs \$4 per pound and provides 180 units of nutrients per pound. CONSTRAINTS: The nursery spends \$100 or less for fertilizer and wants to provide at least 5200 units of nutrients. Because brand B contains a special nutrient that brand A does not, the nursery uses at least 4 pounds of brand B. How many pounds of each should the nursery use to minimize cost? Click here to see answer by stanbon(57347)

 Question 92212: This is from a worksheet Is this correct?? (x)=-x^3-x^2+2x-8 find f(-1),f(0),f(2) f(-1)=(-1)63-(-1)^2+2(-1)-8 -3-2+-2-8 answer -15 f(0)^3-(0)^2+2(0)-8 0-0+0-8 answer -8 f(2)^3-(2)^2+2(2)-8 8-4+4-8 answer is 0 Would the sloution for the first answer be -7? Click here to see answer by scott8148(6628)
 Question 92212: This is from a worksheet Is this correct?? (x)=-x^3-x^2+2x-8 find f(-1),f(0),f(2) f(-1)=(-1)63-(-1)^2+2(-1)-8 -3-2+-2-8 answer -15 f(0)^3-(0)^2+2(0)-8 0-0+0-8 answer -8 f(2)^3-(2)^2+2(2)-8 8-4+4-8 answer is 0 Would the sloution for the first answer be -7? Click here to see answer by Damoria(1)

 Question 92217: I need help with this problem. I'm not understanding what it is I should do. Write the equation of the line passing through (-2,17) and (-1,12) Please help I'm getting really frustrated. Click here to see answer by stanbon(57347)
 Question 92217: I need help with this problem. I'm not understanding what it is I should do. Write the equation of the line passing through (-2,17) and (-1,12) Please help I'm getting really frustrated. Click here to see answer by bucky(2189)

 Question 92240: Solve the system by substitution. 3x – y = –7 x + y = –9 Click here to see answer by checkley71(8403)

 Question 91919: Graph the inequality 3x + 5y < 15 Click here to see answer by mathispowerful(115)

 Question 92253: Graph the inequality x<3 Is this how I am to answer this problem? <--+---+---+---+---+---+---+---+---+---*===+===+===+==> -6 -5 -4 -3 -2 -1 0 1 2 3 4 5 6 Click here to see answer by jim_thompson5910(28595)

 Question 92110: how do i graph: and on the same coordinate plane? Click here to see answer by checkley71(8403)

 Question 92390: Can someone please help me solve this problem. Write an equation of a line that passes through point (4,-9) and a slope of -4. Thank you Click here to see answer by jim_thompson5910(28595)

 Question 92409: how do i graph and on the same coordinate plane? what type of lines are formed? how do i compare their slopes? Click here to see answer by checkley71(8403)

 Question 92410: Solve the system by graphing. 4x+2y=10 y=4 I need to solve the equations and graph them. Click here to see answer by checkley71(8403)

 Question 92417: if a graph of f(x)=-3x2+2x+k passes through the point (-1,3), then the value of k is? Click here to see answer by bucky(2189)

 Question 92306: Directions: Graph the absolute value inequalities. |x+2y| greater than or equal to 6 Click here to see answer by anraymer(35)

 Question 92502: I need to graph an inequality: y>-x The Solution book says the line runs through the origin and above, but I don't understand how to get the coordinate points. The book is Elementary Algebra by Kaufmann & Schwitters ISBN 0-495-10571-6 Chapter 8.2 pg. 339. Thank you very much! Click here to see answer by jim_thompson5910(28595)

 Question 92565: Identify the vertex for the graph of y=4(x+3)^2+4 Click here to see answer by uma(370)

 Question 92562: Write the equation of a line in slope -intercept form that passes through (-1,7) and (-2,-15). Click here to see answer by jim_thompson5910(28595)

 Question 92561: What is the equation of a line with a slope of -5 and containing the point (2,4)? Click here to see answer by ankor@dixie-net.com(15652)
 Question 92561: What is the equation of a line with a slope of -5 and containing the point (2,4)? Click here to see answer by jim_thompson5910(28595)

 Question 91079: Find the horizontal asymptote of F(x) = 5x^2+1/x^2+2x+1 Click here to see answer by Nate(3500)

 Question 92802: I need your help solving this problem: solve: {4x-y =11 {x+2y = -4 Is this the case where I substitute 0 for y in the first equation and solve for x and then substitute 0 for x in the second equation and solve for y? Or do I use the value for x from the first equation to plug into the second equation? I am confused. Thanks for your help. Barineau Click here to see answer by jim_thompson5910(28595)

 Question 92758: Find the slope of the line that passes through these points (0,-4) I do not seem to understand how this is done can you help? Click here to see answer by scott8148(6628)

 Question 92759: find the slope of the passing through the following points: (2, 0) and (0, -4) A. 2 B. -2 C. 1/2 D. -1/2 Thank you for any help... Click here to see answer by scott8148(6628)

 Question 92880: If f(x)=x(x+3)(x-1), use interval notation to give all values of x where f(x)>0. Click here to see answer by bucky(2189)

 Question 92950: Find the slope and y-intercept. 5x – 7y = 70 Click here to see answer by jim_thompson5910(28595)

 Question 92948: Solve the system by graphing. 3x + y = 6 3x – y = 0 Click here to see answer by jim_thompson5910(28595)