# 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 45348: Find an equation of the circle that stisfies the given conditions center (-1, 5); passes through (-4, -6) Click here to see answer by Nate(3500)
 Question 45348: Find an equation of the circle that stisfies the given conditions center (-1, 5); passes through (-4, -6) Click here to see answer by tutmath(14)

 Question 45347: Find an equation of the circle that stisfies the given conditions center (-1, 5); passes through (-4,l -6) Click here to see answer by stanbon(60771)

 Question 45335: Find the midpoint of the segment that joins them. (2,3), (5,2) Click here to see answer by fractalier(2101)

 Question 45337: Sketch the region given by the set? !( X, Y)! x _< 0 ) Click here to see answer by rapaljer(4670)

 Question 45345: make a table of values and sketch the graph of the equation. and test for symmetry.y= 1- x (square) Click here to see answer by Nate(3500)

 Question 45338: Sketch the region given by the set? !(X,Y)! 1 < x < 2) Click here to see answer by rapaljer(4670)

 Question 45339: Sketch the region given by the set? !cx,y)! y > 1) Click here to see answer by rapaljer(4670)

 Question 45459: write an equation of the line that passes through each pair of points. find the slope and y-intercept. 1. (1,1) (7,4) 2. (5,7) (0,6) 3. (-5/4,1) (-1/4,3/4) how do you find the y - intercept ? Click here to see answer by jake_6233(74)

 Question 45612: find the linear equations for the following graph and sets of points. (0,2) (2,1) Click here to see answer by checkley71(8403)

 Question 46115: Hi my friend told me about this place and said you could help me i need to find a parabola.Like I need to find the interceptsof the graph of the parabola. y = x squared - 4 thanks Click here to see answer by Nate(3500)

 Question 46116: i have never used your site before but a lot of kids at my school swear by you guys. We are working on parabolas and I have no clue. I need to determine the vertex of the graph of the parabola from the following y= x squared + 9 hope you guys are as good as everyone says. thanks and have a good one Click here to see answer by Nate(3500)

 Question 46114: DINGDING DING!!! PARABOLA TIME!! LOL ok so i need to find the intercepts of the graph of the parabola. y = x squared + 4 ! Fun Stuff! Have a nice day!!! Click here to see answer by Nate(3500)

 Question 46113: alrighty.. i dont have any directions but i have this y = x squared- 2x- 8 and i have multiple choiceand i need to know 2 x intercepts and 1 y intercept thank you Click here to see answer by Nate(3500)

 Question 46112: I need to know the vertex and the intercepts for both y and x. y= x squared - 2x Thanks a bunch! * muah* Click here to see answer by Nate(3500)

 Question 46279: Solve the system of equations by graphing the equations on the same set of axes. x+3y = 8 2x - 3y = -11 thanks! Click here to see answer by Nate(3500)

 Question 46277: I have to sketch the graph of the equation and identify the vertex and the intercepts. y= x squared - 4 again i need to know the intercepts and vertex Click here to see answer by Nate(3500)

 Question 46275: I need to find the intercepts of the graph of the parabola. y = x squared + 5x +4 I have to have 2 x-intercepts and 1 y-intercept thanks Click here to see answer by Nate(3500)

 Question 46274: Find the domain and range of the graphed quadratic function. Assume that the graph continues without end. Since i cant show the the graph i can tell up about it. the parabola goes down and it point ( vertex i think ) is at (2,1). Hope you understand it. Click here to see answer by Nate(3500)

 Question 46691: I am looking for helping in plotting the below problem. I BELIEVE it will end up with perpendicular lines but I'm not sure and I'm womdering if someone can give me a full explanation on how to do this as well as plot it: ( 5/2, 7/2) Click here to see answer by checkley71(8403)

 Question 46845: can someone help me with the following problem please? it asks to Find the points of intersection between the line y=x+7 and the curve x^2+2x+5.Also it asks to sketch the area between the graphs............im not sure what that means. Please do help thank u!! Click here to see answer by atif.muhammad(135)

 Question 47310: I need a formula to calculate the length between to points on a graph- Example: Between (3,3) and (3,7) would be a length of four. I need a reusable formula for a computer program and I can't remember the name of the one we used in high school (otherwise I would just find it on the internet) Click here to see answer by moremath(1)

 Question 47726: Find the distance between each pair of points. (-3, 0) and (4, 0) Click here to see answer by aaaaaaaa(138)

 Question 47720: Find an equation of theline that contains the point (5,-7) and perpendicular to y=1/2x-4 Thank you, Michelle Click here to see answer by venugopalramana(3286)

 Question 47827: Find the equations for the horizontal and vertical asypmtotes of each function: a.) b.) c.) Click here to see answer by venugopalramana(3286)

 Question 48215: When you graph a quadratic function and find the vertex is on the Y-axis, you know for sure that? I think that we know for sure that the coefficient of the x term ("b") is zero; OR The roots of the equation is the positive and negative of the same number (+p and -p). Click here to see answer by Earlsdon(6294)

 Question 48811: 2x + 4y = -8 how do you graph this on a grph i have no clue Click here to see answer by checkley71(8403)

 Question 48820: Write the equation of the line passing through each of the given pairs of points. Write your result in slope-intercept form,where possible (-1,3) and (4,-2) (2,-3) and (2,4) Click here to see answer by venugopalramana(3286)

 Question 48837: Find the domain, range, vertical asymptote and x-intercept of the laogarithmic function and sketch its graph f(x)=Log subscript 7(x/14) Click here to see answer by Nate(3500)

 Question 49071: identify the axis of symmetry and create a table of values for y=-x^2+6x-2 Click here to see answer by Nate(3500)

 Question 49806: A slope of -3 means that for every horizontal change of one, there is a vertical change of what? Click here to see answer by stanbon(60771)

 Question 49841: I was using your site to teach my son algebra, and we noticed an incorrect answer that we wanted to notify you about. "Checkley71" answered question #1743 by starting this way: Problem to graph: 2x+4y=-8 Error made in solving equation was when he subtracted 2x from both sides, he got: 4y=-2x+8 "Checkley71" accidentally changed the (-8) to a (+8) when he subtracted 2x from both sides. The rest of the problem was wrong from that point forward. Please send me an e-mail when the problem is corrected so I can again review it with my son. Thanks for a great site! Rick Ross krar64@hotmail.com Click here to see answer by alka(15)
 Question 49841: I was using your site to teach my son algebra, and we noticed an incorrect answer that we wanted to notify you about. "Checkley71" answered question #1743 by starting this way: Problem to graph: 2x+4y=-8 Error made in solving equation was when he subtracted 2x from both sides, he got: 4y=-2x+8 "Checkley71" accidentally changed the (-8) to a (+8) when he subtracted 2x from both sides. The rest of the problem was wrong from that point forward. Please send me an e-mail when the problem is corrected so I can again review it with my son. Thanks for a great site! Rick Ross krar64@hotmail.com Click here to see answer by Earlsdon(6294)

 Question 49694: the table below shows the relationship between the amount of hours billy worked and the amount of his paycheck. identify the independent and dependent quantities and justify your answer. hours: 10 15 20 25 amount: 70 105 140 175 Click here to see answer by tutorcecilia(2152)

 Question 50494: Find the equation of the line through (1,-5) and (7,1) write the equation in slope intercept form. 1-(-5)/7-1= 6/6 or 1 as the slope, then y=x+b y-(-5)=x+1 y+5=x+1 y=x-4 is this correct? Click here to see answer by AnlytcPhil(1321)

 Question 50775: y = x^2 - 2x + 5, find the vertex, the axis of symmetry, and graph Click here to see answer by stanbon(60771)

 Question 51046: 1. What identifies the location of a point? 2. In a coordinate plane this shows the position abobve or below the x-axis Click here to see answer by stanbon(60771)

 Question 51267: For this question, we must find the revenue from the sale of x items given by R=50x. Does this ask to graph the equation only or do I need to solve this for x. And if so, how do I do it? Click here to see answer by rapaljer(4670)

 Question 51383: Please help me answer the following probelm. Write the equation of the line which has y- intercept (0,5) and is perpendicular to the line with the equation y = -3x+ 1. Click here to see answer by stanbon(60771)

 Question 51380: Please help me solve the following problem; Write the eqation of the line that passes through the point?(2,1) and is parallel to the line with the eqation y=5/2x + 6. I honestly do not know where to even begin on this. Click here to see answer by Earlsdon(6294)

 Question 51410: Please Help. My Problem is to graph by first solving for y. The equation is x + 2y = 8. I am completely lost here. Click here to see answer by music974(43)
 Question 51410: Please Help. My Problem is to graph by first solving for y. The equation is x + 2y = 8. I am completely lost here. Click here to see answer by rchill(405)

 Question 51413: PLEASE HELP i'M NOT SURE IF IAM DOING THIS CORRECTLY. THE PROBLEM IS; WRITE THE EQUATION OF THE LINE WITH THE SLOPE -6 AND Y- INTERCEPT (0,-8). MY ANSWER IS Y=-6X-8, IS THIS CORRECT? Click here to see answer by mathchemprofessor(65)

 Question 51412: My problem is to write the equation of the line with slope -1/2 and y - intercept (0,3). Then graph the line. My answer is y = -1/2x + 3. Is this correct? Click here to see answer by mathchemprofessor(65)