# 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 154132: Using your calculator graph the function f(x) = x 2 + 2x – 3 over the interval [-5,5]. Approximate any local maxima and local minima. Round your answers to two decimal places. Click here to see answer by Alan3354(30939)

 Question 154212: {x< -3} U {x>0)} x is greater than or equal to -3 union x>o Click here to see answer by jim_thompson5910(28476)

 Question 154216: Find the function that is finally graphed after the following trasnformations are applied to the graph of y = x^3. The graph is shifted to the right 5 units, stretched by a factor of 10, and shifted vertically down 3 units Click here to see answer by stanbon(57214)

 Question 154097: I am starting math again and it has been a long time i need to know how to find midpoint and distance of this type of problem. (-2,4), (-3+3 squareroot of 3,7) Click here to see answer by oscargut(891)

 Question 154291: This review will it ever end. I kinda need a refresher on solution sets and how to graph them. There are two types one is a straight equation and the other an inequality. example 1. 3(2x-1)=4x+7 If its supposed to go this way I first broke it down into 6x-1=4x+7 which normally to me would become 2x=8 and x=4 but I dont think thats where that is supposed to be heading. example 2. is 5<3w +8<14 I can sorta remember this one having to do with subtracting the 8 from the seprate sections leaving -3<3w<6 then some sort of divison maybe? -1< w <2 Is that how that goes or no? Click here to see answer by stanbon(57214)

 Question 154327: (-6,5);8x=5y+2 Write an equation of the line containing the given point and the parrallel to the given line. Expess in the form y=mx+b Click here to see answer by jim_thompson5910(28476)

 Question 154332: Determine whether the lines of the graph are perpendicular. 6x-7y=5 6y-7x=5 Click here to see answer by jim_thompson5910(28476)

 Question 154337: Find an equation of the line containing the given pair of points (-6,0)(0,1) Click here to see answer by jim_thompson5910(28476)

 Question 154338: Find the slope-intercept equation of the line that has the given characteristics Slope 8 and y - intercept (0,6) Click here to see answer by jim_thompson5910(28476)

 Question 154339: Graph the equation using the slope and y-intercept y=1/4x+2 Click here to see answer by jim_thompson5910(28476)

 Question 154443: Describe what the graph of interval {-4, 10} looks like Click here to see answer by Edwin McCravy(8879)

 Question 154496: Find the value of b so that the graph of bx+5y=8 and has a slope of 4. Click here to see answer by BrittanyM(80)

 Question 154609: I really need help please on this graphic equation. I need to draw a graph of an equation that contains two x-intercepts, -2 and 3. At the x intercept -2, the graph crosses the x-axis; at the x-intercept 3 the graph touches the x-axis. I'm lost!!! There are no ordered pairs so what shall I do? Help me please!!! Click here to see answer by ankor@dixie-net.com(15622)

 Question 154667: Why is the line x=4 a verticle line. Click here to see answer by checkley77(12569)

 Question 155094: How do you find the slope of the line containing the points (-1, -1/5) and (2/3, 3/4)? I am confused about this because I do not understand how to find the slope when the points contain fractions and/or decimals. Click here to see answer by stanbon(57214)

 Question 155100: find the vertex, intercepts (x and y), axis of symmetry and sketch of y=-3x^2-6x-2 Click here to see answer by stanbon(57214)

 Question 155104: Which is the solution of the equation y = 4x-1 A. (0,1) B. (2,7) C. (1,3) d. (-1,-5) Click here to see answer by checkley77(12569)

 Question 155111: How do you identify the slope, m, and the y-intercept, b, in 3/4x+2y=-3? Thank you. Click here to see answer by nerdybill(6948)

 Question 155129: How do you identify the slope, m, and the y-intercept, b, in 3/4x+2y=-3? Thank you. Click here to see answer by stanbon(57214)

 Question 155144: How many solutions exist for a quadratic equation? How do we determine whether the solutions are real or complex? Click here to see answer by jim_thompson5910(28476)

 Question 155148: Given that a quadratic goes through the points (-1,0), (0.67,0), and (0,-2), find the quadratic that goes through the points and find the solutions. Click here to see answer by jim_thompson5910(28476)

 Question 155154: Write 3 quadratic equations with a,b,c (co-efficients of x2. X, and the constant) as 1. Integers: 2. Rational numbers: 3. Irrational numbers: Click here to see answer by jim_thompson5910(28476)

 Question 155165: 1. Determine whether the following equations have a solution or not? Justify your answer. a) x^2 + 6x - 7 = 0 b) z^2 + z + 1 = 0 c) (3)^(1/2)*y^2 - 4y - 7*(3)^(1/2) = 0 d) 2x^2 - 10x + 25 = 0 e) 2x^2 - 6x + 5 = 0 f) s^2 - 4s + 4 = 0 g) (5/6)x^2 - 7x - 6/5 = 0 h) 7a^2 + 8a + 2 = 0 Click here to see answer by jim_thompson5910(28476)

 Question 155167: 2. If x = 1 and x = -8, then form a quadratic equation Click here to see answer by jim_thompson5910(28476)

 Question 155168: 3. What type of solution do you get for quadratic equations where D < 0? Give reasons for your answer. Also provide an example of such a quadratic equation and find the solution of the equation. Click here to see answer by jim_thompson5910(28476)

 Question 155170: 4. Create a real-life situation that fits into the equation (x + 4)(x - 7) = 0 and express the situation as the same equation. Click here to see answer by jim_thompson5910(28476)

 Question 155186: hello may u please help me out i don't know all the steps/rules a scatter plot should have like can u skip #s if a number is too big what is the point of a scatter plot ? what is it used for? please try to write me a book [meaning tell me everything u might kno like if ur unsure of an answer on a test/quiz u might try to put down everything u kno about that topic and hope its right] so that i kno everything i need to kno and i will study what you write back to me so please be right Thank You Click here to see answer by stanbon(57214)

 Question 155243: Find the equation of the line that represents the number of book sales 1,11,500 and 4,13,600 Click here to see answer by nerdybill(6948)

 Question 155275: what is the slope of 1,11,500 and 4,13,600 in book sales Click here to see answer by nerdybill(6948)

 Question 155351: Ingrid scored 65 on her calculus midterm. If her final exam score counts twice as much as her midterm exam, then for what range of scores on her final would she get an average between 79 and 90? Hint: For this weighted average multiply the final exam by 2 and the midterm score by 1. Click here to see answer by Edwin McCravy(8879)

 Question 155396: A wooden fence was built around a construction site. The wall is 600 ft. long and 8 ft. high. Each 12 ft. length of the fence has a 2x2ft. window cut into the wallso people can watch the construction. The city council asked the construction company to paint the side of the fence that is facing outward. A gallon of paint will cover approximately 250 square ft. In your answer document determine how many gallons of paint are needed to paint one side of the fence. Show your work to support your answer. I got 19 gallons but i dont think its right can you help me? Click here to see answer by checkley77(12569)

 Question 155536: Draw the graph of a line with y-intersept 5 and slope of 7/5. Click here to see answer by checkley77(12569)

 Question 155602: Graph the step function F(x) = 4, if -10 < X< = -8 6, if -8 < x < = -6 8, if -6< x < = -4 9, 1 if -4 < x < = -2 10, if -2 < x < < = 0 Click here to see answer by jim_thompson5910(28476)

 Question 155534: write an equation of the line that passes though (3,9) and is perpendicular to a lone with a slope of -3/7/ Write the answer in slope- intercept form and standard form Click here to see answer by Alan3354(30939)

 Question 155607: On many graphing calculators [x] is denoted by int(x). Use a graphing calculator to graph the function. g(x) = - [x] Click here to see answer by jim_thompson5910(28476)

 Question 155609: Choose the statement that is true about the given quantities: A. The quantity in column A is greater B. The quantity in column B is greater C. The two quantity are equal D. The relationship cannot be determined from the given information Column A : f(3) where f(x) = 2x -7, if x < = 1 = -x + 9, if x > 1 Column B: f(2) where f(x) = x + 2, if x < 8 = 3x -3, if x > = 8 Click here to see answer by jim_thompson5910(28476)