# 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 623275: Is the line through (3,-5) and (-1,7) and the line through (6,-13) and (-2,11) parallel, pependicular, or neither? Click here to see answer by unlockmath(1599)

 Question 623424: Sketch the graph of the function: y= -(x-1)exponent 2 minus 2 Click here to see answer by jim_thompson5910(28476)

 Question 623430: 1/2x is greater than or equal to -7/4 what is the solution set Click here to see answer by Alan3354(30939)

 Question 623561: Sketch the graph of the function. f(x) = x2 + 2x − 2 (axis of symmetry = -1, vertex = (-1, -3) Click here to see answer by Theo(3458)

 Question 623493: What point is the intersection of the graphs of x^2 - y^2 = 5 and 2x^2 + y^2 = 22 ? Click here to see answer by Theo(3458)

 Question 623715: Please help with interval notation and graph! -(x-4) is greater than or equal to 4. also, -3x is greater than 9 or 4x is greater than 12 Click here to see answer by ewatrrr(10682)

 Question 624025: How do I solve the system of y=2x. 2x+y=4 graphically and indicate the method you used to plot the lines and show you work?? Check by substituting the answer back into the original equation? Please help me on this one I've never done this befor and my book does not explain how to even start! Please And thank you! Click here to see answer by ewatrrr(10682)

 Question 624029: Rewrite the given equation in slope-intercept form by solving for y: 10x+y=6 Click here to see answer by ewatrrr(10682)

 Question 624021: Is the inequality -x-4y>3 in correct form for graphing? Briefly explain? Please I need some help I'm not sure how to explain it! please explain what it means thank you! Click here to see answer by ankor@dixie-net.com(15622)

 Question 624032: write the equation of the line passing through (4,8) and parallel to 4x-5y=10 Click here to see answer by htmentor(788)

 Question 624200: Would you pls help me with this problem? There are 52 white keys & 36 black keys on a standard piano. What is the probability that if a person did not look & hit the keyboard twice that she would first hit a white key & then a black key? Pls, send me the steps because I want to be able to solve other similar exercises. (This is the 2nd time that I am submitting this problem without receiving any answer, could anyone help pls.) Thanks a lot Click here to see answer by ewatrrr(10682)

 Question 624484: write the equation of the line with slope = 4/5 and containing the point (3,7) Click here to see answer by ewatrrr(10682)

 Question 624488: solve the system of equations and give the value of x. y= -3x+13 2x+9y=-8 Click here to see answer by jim_thompson5910(28476)

 Question 624469: Write an equation of the line in slope-intercept form given the slope is -5 and the y-intercept is 7. Click here to see answer by rfer(12644)

 Question 624515: Find the vertex, line of symmetry, min or max and graph. F(x)-1/2(x+6)^2+2 Click here to see answer by lwsshak3(6456)

 Question 624587: I don't think this is the subject but I couldn't find relations and functions. My question is Beginning with the graph of the function y=x^2, which of the following shows the changes you would make to the function so that the vertex lies at (-1,1) and he parabola opens in a negative direction? a) y=-(x+1)^2+1 b) y=(x+1)^2+1 c) y=(x+1)^2 d) y=-(x-1)^2+1 e) none Click here to see answer by oscargut(891)

 Question 624605: Solve these equations using the addition property. 2x + y = -2 x + y = 5 The lines intersect at (?,?) Click here to see answer by Alan3354(30939)

 Question 624607: Solve these equations using the addition property. 5x + y = 6 5x + 3y = -4 The lines intersect at (?,?) Click here to see answer by Alan3354(30939)

 Question 624606: Solve these equations using the addition property. 3x - 4y = 7 3x + 2y = -5 The lines intersect at (?,?) Click here to see answer by Alan3354(30939)

 Question 624608: Solve these equations using the addition property. x + y = k x - y = k The lines intersect at Click here to see answer by Alan3354(30939)
 Question 624608: Solve these equations using the addition property. x + y = k x - y = k The lines intersect at Click here to see answer by jim_thompson5910(28476)

 Question 624528: Graph the following parabolas: y= 100- x^2 and y= x^2 - 6x Thank you!! :) Click here to see answer by Alan3354(30939)

 Question 624717: The perimeter of a triangle with 2 equal sides is 46 cm. If its base were lengthened by 4 cm and each leg were shortened by 7 cm, all 3 sides would be equal. Find the length of the base of the original triangle. Click here to see answer by ewatrrr(10682)

 Question 624730: When the cost of a car is multiplied by 0.04 the result is \$1720. Find the cost of the car Click here to see answer by rfer(12644)

 Question 624716: A merchant has coffee worth \$60 a pound that she wishes to mix with 70 pounds of coffee worth \$90 a pound to get a mixture that is worth \$70 a pound. How many pounds of the \$60 coffee should be used? Click here to see answer by Maths68(1474)

 Question 624731: How do you rewrite the expression using distributive property (6a + 6)I need to make that 6squared by 8 Click here to see answer by Alan3354(30939)

 Question 624718: The speed of a stream is 4 mph. If a boat travels 46 miles downstream in the same time that it takes to travel 23 miles upstream, what is the speed of the boat in still water? Click here to see answer by Alan3354(30939)

 Question 624911: Find the slope containing the points (9, 3) and (4, 2) Click here to see answer by jim_thompson5910(28476)

 Question 624910: Using the point-slope equation, find the equation containing (2, -3) and slope m = 5 Click here to see answer by jim_thompson5910(28476)

 Question 624909: Find the slope containing the points (7, 2) and (3, 5) Click here to see answer by jim_thompson5910(28476)

 Question 624913: Find the slope containing the points (-2, 5) and (1, 7) Click here to see answer by jim_thompson5910(28476)

 Question 624928: Solve the system of linear equations by graphing. 4x-y=0 2x-y=-2 Click here to see answer by ewatrrr(10682)

 Question 624940: Graph the inequality y < 3x + 1 Click here to see answer by jim_thompson5910(28476)

 Question 625011: Use the graph of y = e^x to evaluate e^1.7 to four decimal places. A. 5.4739 B. 4.6211 C. 2.7183 D. 0.1827 Click here to see answer by Alan3354(30939)

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