# 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 318524: find f^-1(x) for the function f(x)= 2x^5 - 3. Thanks Click here to see answer by Fombitz(13828)

 Question 318538: Is (1, 4) a solution of 3x + 2y = 11? Click here to see answer by rfer(12670)

 Question 318537: Is (6, 3) a solution of y = 2x + 1? Click here to see answer by rfer(12670)

 Question 318534: Find the ordered-pair solution of 3x + 5y = -14, x = -3. Click here to see answer by rfer(12670)

 Question 318526: Complete the square and write the equation in standard form. Then give the center and radius of the circle. x^2 + y^2 + 16x - 2y = -29 Thanks Click here to see answer by Fombitz(13828)

 Question 318529: IS (3,4) A SOULTION OF Y= -X+7? SHOW PROBLEM AND SLOVE Click here to see answer by Fombitz(13828)

 Question 319119: Find the Intercepts of the given equation, express each as an ordered pair. Not sure how to write this out. y=2x + 8 Click here to see answer by Fombitz(13828)

 Question 319229: write y - 5= -3/4(x + 1) in slope intercept form Click here to see answer by Fombitz(13828)

 Question 319456: Find the co ordinate of the centre of a circle which passes through the points A(1,2),B(3,-4) and C(5,-6).Also find the radius of the circle. Click here to see answer by Greenfinch(383)

 Question 319784: Determine the equation of a line passing through (0,4) with a slope of 1/3. Express this equation using the standard form. Click here to see answer by mananth(12270)

 Question 319785: Find the slope of a line passing through the points (6,3) and (6,-4). I worked it y2 -y1/ x2-x1 and came up with -1/0. knowing you can not divide by 0,would the answer be undefined? Click here to see answer by Alan3354(30993)

 Question 319837: Find the slope of the line that passes through the points A(-4,-2) and B(-9,0). Click here to see answer by Alan3354(30993)

 Question 319390: Find the co-ordinate of the center of a circle which passes through the points A(1,2),B(3,-4)& C(5,-6).Also find the radius of the circle. Click here to see answer by scott8148(6628)

 Question 319653: I need to solve: Find the center and radius of the graph of the circle. The equation of the circle is written in general form. Then graph the circle. x^2 + y^2 + 10x - 16y - 32 = 0 Click here to see answer by scott8148(6628)

 Question 320535: The problem asks to find the vertex and graph the following quadratic function. y=-x+6x My professor says I need only turn in the coordinates. This is what I have tried... x=-b/2a = -6/2(-1) = -6/-2 =3 x=3 y=-2(3)^2+6(3)= -2(9) + 18 = -18 + 18=0 y=0 My book says the vertex is (3,9) so I am totally confused. I come up with (0,0) for the y intercept but I have no idea how that relates to me finding the coordinates for this graph. I have a very hard time grasping this concept. Thanks for your time. Tracy Jones Click here to see answer by scott8148(6628)
 Question 320535: The problem asks to find the vertex and graph the following quadratic function. y=-x+6x My professor says I need only turn in the coordinates. This is what I have tried... x=-b/2a = -6/2(-1) = -6/-2 =3 x=3 y=-2(3)^2+6(3)= -2(9) + 18 = -18 + 18=0 y=0 My book says the vertex is (3,9) so I am totally confused. I come up with (0,0) for the y intercept but I have no idea how that relates to me finding the coordinates for this graph. I have a very hard time grasping this concept. Thanks for your time. Tracy Jones Click here to see answer by solver91311(16897)

 Question 321861: 2x+5y=9 2x+5y=7 is this parallel penpendicular or neither Click here to see answer by solver91311(16897)

 Question 323088: find the slope of the line by finding the coordinates of two points on it. -8x + 5y =9 Click here to see answer by solver91311(16897)

 Question 323463: Given the line y = 3x – 2 and the point (2, -4), find the equations of the lines parallel and perpendicular to the line above. Click here to see answer by checkley77(12569)

 Question 323548: In a coordinate system points A (-2, 3) and B (6, -1) have a midpoint of X. What is the midpoint between A and X? Click here to see answer by mananth(12270)

 Question 323895: how do you plot (-1,-4,3) on a coordinate grahp ? Click here to see answer by Fombitz(13828)

 Question 324940: Hi, I am havig problems with miceconomics..demand and supply the problem is : suppose the equation for demand can be expressed as P=30-2Q. The equation for supply can be expressed as P=2Q. Find the equilbrium price and quantity . Be able to illustrate the graph that illustrate your answer Click here to see answer by jessica43(140)

 Question 325026: Find the distance between the pair of points: (-a,b) and (2a,4b) Click here to see answer by Fombitz(13828)

 Question 326401: my problem deals with distances distance=10 (-6,-2) (-12,y) Click here to see answer by Fombitz(13828)

 Question 327244: i was wondering for plotting in a fraction 4/5, would you go up to 4 on the y axis and 5 right on the x axis? Click here to see answer by jvan(28)

 Question 327381: locate the x variable and y variable in the following: a.pressure and volume b.force and weight c.distance and time Click here to see answer by stanbon(57387)

 Question 327594: (2,8); x+4y=3 write an equatopn of the line containing the given point and parallel to the given line express the answer in the from y=mx=b The equation of the line y= Click here to see answer by Fombitz(13828)

 Question 327673: graph the equation using the slope and the y intercept of y=1/5x+7. i know the first corrdinates will be (0,7) need help with finiding the other? Thanks Click here to see answer by stanbon(57387)

 Question 328046: Graph the system of inequalities. x + 3y ≤ 9 3x + y ≤ 9 x ≥ 0 y ≥ 0 Click here to see answer by nyc_function(2733)

 Question 328156: Sketch the graph of the following equation on your own paper, then make the correct graph below. 5x + y = 4 Click here to see answer by nyc_function(2733)

 Question 328068: Graph the inequality on a plane 3y - 4x > 12 could i please have coordinates too??? thank you Click here to see answer by nyc_function(2733)

 Question 328354: find the distance between the points. find the coordinates of the points that are 10 units away from the origin and have a y-coordinate equal to -6. Click here to see answer by vleith(2825)

 Question 328661: are the following lines parallel y=2x=5 and y=2x-10 Click here to see answer by rapaljer(4667)

 Question 327593: y=1/5x+7 graph the equation using the slope and the y intercept Click here to see answer by Fombitz(13828)

 Question 328892: Evaluate the exponential function for three postive values of x, three negative values of x, and at x=0. Use the resulting ordered pairs to plot the graph. State the domain and the range of the function. f(x) = e^-(x+5) Click here to see answer by solver91311(16897)

 Question 329133: Find the distance between the two points: (-3, 22) and (-14, 35) My incorrect answers 5 and sqrt(290). (9, -0) and (-3, -8) My incorrect answers 4 and 5. What is the radius of a circle with the given center that passes through the given point? C (0, 0); Z (-8, 0) My incorrect answers 4 and 8. C (-5, 9); Z (6, 0) My incorrect answers sqrt(173) and sqrt(202). I would be grateful if someone could explain how they got the answers to these problems. Cheers! Click here to see answer by solver91311(16897)
 Question 329133: Find the distance between the two points: (-3, 22) and (-14, 35) My incorrect answers 5 and sqrt(290). (9, -0) and (-3, -8) My incorrect answers 4 and 5. What is the radius of a circle with the given center that passes through the given point? C (0, 0); Z (-8, 0) My incorrect answers 4 and 8. C (-5, 9); Z (6, 0) My incorrect answers sqrt(173) and sqrt(202). I would be grateful if someone could explain how they got the answers to these problems. Cheers! Click here to see answer by Fombitz(13828)

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