# Questions on Algebra: Coordinate systems, graph plotting, etc answered by real tutors!

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 Algebra: Coordinate systems, graph plotting, etc Solvers Lessons Answers archive Quiz In Depth

 Question 192377: 8x - 4y = 12 and -4x + 2y= -6 Solve the system, graph the system, and interpret the graph. Click here to see answer by Mathtut(3670)
 Question 192377: 8x - 4y = 12 and -4x + 2y= -6 Solve the system, graph the system, and interpret the graph. Click here to see answer by edjones(7569)

 Question 192872: Plot the graph of the equations 8x - 4y = 12 and -4x + 2y = -6 and interpret the result. Click here to see answer by jojo14344(1512)

 Question 192871: Plot the graph of the equations 4x - 6y = 12 and x - 5y = 10 and interpret the result. Click here to see answer by jojo14344(1512)

 Question 192947: here is the problem, but I am not sure if it is going to read correctly or not, any help would bea pparecaited as I have nearly losted it on this one: For the function f(x) find f(-2) and graph the function. f(x)= {3x+5 x< -2 {x+2 x>= -2 *note the bracket is just one large bracket on the left not two* Click here to see answer by jim_thompson5910(28699)

 Question 192975: How does this process work? How do I figure out how to graph the equation correctly? Click here to see answer by Alan3354(31505)

 Question 192870: Plot the graph of the equations 2x - 3y = 5 and 4x - 6y = 21 and interpret the result. Click here to see answer by checkley77(12569)

 Question 193883: 5x+4y = 12 for y when graphed this equation would be a line by examining your answer what is the slope and y intercept of this line Click here to see answer by jojo14344(1512)

 Question 194316: Point P has polar coordinates (14, pi/3). What are the Cartesian coordinates of point P? Is (7, square root 3,7) correct? Click here to see answer by Alan3354(31505)

 Question 195184: For the exponential function ex and logarithmic function log x, graphically show the effect if x is halved. Include a table of values for all four functions. Click here to see answer by solver91311(17070)

 Question 195951: evaluate the functions for the values of x given as 1,2,4,8 and 16. rank inorder from fastes to slowest the rate at which each function changes with increasing values of x. Click here to see answer by solver91311(17070)

 Question 195952: How many points are equidistant from points A and B and also 4 inches from AB? Click here to see answer by RAY100(1637)

 Question 196137: I understand the basic concept of finding the slope and Y intercept. The Fraction in this problem confuses me 3-1/4y=2x Click here to see answer by stanbon(57953)

 Question 197076: what is the coordinate of the point of intersection for the two lines below? x-2y=-2, y=-6x+40 Click here to see answer by Mathtut(3670)

 Question 197075: What is the vertex of the parabola with the equation (y - 1)2 = 4x? Click here to see answer by Mathtut(3670)

 Question 197011: Find the equilibrium point for the given demand and supply functions. D(p) = (p - 62)2 S(p) = p2 + 4p + 2948 Equilibrium price: pE = Equilibrium quantity: xE = can someone help please thanks Click here to see answer by stanbon(57953)

 Question 197354: Find the slope, it it exists (8,4) and (10,-7) I tried to solve it and got -2/11 -7-4/10-8 =-2/11 Click here to see answer by solver91311(17070)

 Question 197781: the line of an equation w/ a slope of 4 goes through [2,3] what is the y cordinate of the point the line goes through when the x cordinate is 6? Click here to see answer by Mathtut(3670)

 Question 198334: Three vertices of a parallelogram are A(1,3), C(4,11), and B(3,-2). If A and B lie on the same side, what is the fourth vertex? Please help to resolve. Thanks Click here to see answer by anantha(86)

 Question 198666: plot the graph of each pair of equations. calculate and show the intercepts on the graph. show and explain the solution for each system of equations. 1.2x-3y=5 and 4x-6y-21 2.4x-6y=12 and x-5y=10 3.8x-4y=12 and -4x+2y=-6 Click here to see answer by arallie(162)

 Question 198948: Graph the points A(5, –4), B(1, –2), and C(3, 3) on the same coordinate plane. Click here to see answer by solver91311(17070)

 Question 199334: 1.f(x) = 5x f(a - 2) 5(a-2) - 1 5a - 10 - 1 5a - 11 2.f(x) = 4x+2 3.f(x) = (1/3)x 4.f(x) = log5x Can someone help me justify these answers. Is the first one right? Click here to see answer by solver91311(17070)

 Question 199333: For the exponential function ex and logarithmic function log x, graphically show the effect if x is halved. Include a table of values for all four functions. Could someone tell me if this is correct? e^x becomes e^(x/2) is x is halved ln x becomes ln(x/2) is x is halved. Start out with x = 4 and compare what you get with x = 2 and x = 1. ln4 = 1.386 ln2 = 0.693 ln1 = 0 Each time x doubles, ln x increases by 0.693 e^4 = 54.60 e^2 = 7.389 e^1 = e = 2.718 Each time x doubles, e^x gets squared. Click here to see answer by solver91311(17070)

 Question 201359: what is the slope of the y intercepte for 1/2x + 27 Click here to see answer by Alan3354(31505)

 Question 201651: Algebraically find the x and y intercepts of the equation 5x - 5y = 3 and write each as an ordered pair. Click here to see answer by solver91311(17070)

 Question 201967: well its a two part question i answered a already but am finding it impossible to answer b i was hoping you could help me out in the first part you had to show that p (4,2) was equidistant from a (9,2) and b (1,6). i did this by graping the points and then using the distance formula from a to p and b to p which when rounding p to b is equidistant. however the second part says this: if (2,k) is equidistant from a and b find the value of k. thanks so much for any help you could provide me with. Click here to see answer by scott8148(6628)

 Question 202114: True or False The order pair(-6,-4)is a solution of the following systems of equations -3x-6y =42 9x + 5y = -74 Click here to see answer by rfer(12726)

 Question 202115: of the lines listed below, which one passes through the point (0,4) y=3x + 4 y=5x + 4 y=5x + 6 y=4x +5 y=6x + 8 Click here to see answer by rfer(12726)

 Question 202116: write an equation of the line that passes through the given point and is parallel to the given line. Write the answer in a slope intercept form (0,4) 8y -48x=3 y= -1/6x + 6 y=-1/6x + 4 y=6x -4 y= -1/4x + 6 y=6x + 4 Click here to see answer by jojo14344(1512)

 Question 202602: Question: What is the highest point on the graph of the function f(x)=-3x^2+6x-8? (5,-1),(1,5),(5,1) 0r (1,-5) ? thanks for your help. Click here to see answer by solver91311(17070)

 Question 202662: find the intercepts and then use them to graph the equation. y=-3-3x Click here to see answer by vleith(2825)

 Question 202663: graph the line containing the given pair of points and find the slope. (9,0) and (7,-7) Click here to see answer by vleith(2825)
 Question 202663: graph the line containing the given pair of points and find the slope. (9,0) and (7,-7) Click here to see answer by rfer(12726)

 Question 202697: Suppose f(x) is an odd function whose domain is all real numvers. If the ordered pair(5,-2) is on the graph of y = f(x), then another ordered pair on the graph is (-2,5), (-5,-2), (-5,2), (2,-5)????? thanks for your assistance. Click here to see answer by jim_thompson5910(28699)

 Question 202879: Please help me to understand how to understand and work out this problem I have many similar in composition to do. I just need to grasp the concept more thoroughly. Problem: Find the equation of the line passing through the points (-2, -8) and (0, -2). Write your equation in slope-intercept form. Thank You for the Help. Scott Davey Click here to see answer by rfer(12726)