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

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 Question 479912: finding the slope with points (2,5) & (6,10) Click here to see answer by tinbar(133)

 Question 481604: whitch of the following statements is false bout slope A the slope of any horizontal line is 0 B the slope of any vertical line is 1 C the paralle; lines have the same slope D the slope can be found using any two points on a straight line Click here to see answer by jim_thompson5910(29613)

 Question 481762: what is the coordinate of f(x) = -(x-1/2)2 Click here to see answer by stanbon(60778)

 Question 483750: how do i solve this equation 2x-6y=22 4x+6y=8 Click here to see answer by Alan3354(34679)

 Question 484860: Determine the quadrant in which (x,y) is located so that the conditions are satisfied Click here to see answer by Alan3354(34679)

 Question 484766: In a coordinate system, how can we get an equation? for example, a slope intersects X at (3,0) & Y at (0,2). whats the equation of line? A) 2x-3y=6 B) 2x+3y=6 C) 2x+2y=6 D) 2x+3y= -6 E) 3x+2y= -6 explain pls. Click here to see answer by ankor@dixie-net.com(16527)

 Question 485880: whats an equation for a horizontal line that passes through the point (1,-5) Click here to see answer by jim_thompson5910(29613)

 Question 485879: whats an a equation for a vertical line that passes through the point (3,2) Click here to see answer by Tatiana_Stebko(1410)

 Question 486370: will x = y + 1 line passes through the point (1,1)? Click here to see answer by Tatiana_Stebko(1410)

 Question 486377: will 2y = x−6 line passes through the point (1,1)? Click here to see answer by MathLover1(7480)

 Question 486127: Find all points on the x-axis that are 5 units from the point (4,-3). Click here to see answer by bucky(2189)

 Question 488174: Determine whether the system is consistent, inconsistent, or dependent. 3x + 2y = 15 6x + 4y = 30 Click here to see answer by jorel1380(2518)

 Question 488736: How do i answer the question asking me : What's the point 2 units to the left of point L? I Have Tried & Asked My Mom For Help Click here to see answer by richard1234(5390)

 Question 490719: I've been having a hard time understanding this, can you help? This is the problem and it needs coordinates. y = x -2; (3, 1) (-2, -4) Thank you, Janice Click here to see answer by Alan3354(34679)

 Question 490485: I NEED HELP. PLEASE HELP ME ASAP. THANKS BEFORE :) 1) The straight line with equation 5x+7y=35 cuts the x-axis and y-axis at points H and K respectively. Find : a) The coordinates of H and K, b) The length of the line segment HK. 2) The coordinates of ▲ ABC are A(2,6) , B(4,2) , C(12,6). Find the length of AB, of BC and of AC. Hence, show that the triangle is right-angled at B. 3) Find the gradient of each of the following lines, a) x/3 + y/5 = 1 b) x/4 - y/3 = 1 c) 2x/3 - 4y/5 = 1 d) 3x/5 + y/2 = 1 e) x/7 - y/11 = 1 f) y/2 - x/5 = 1 4) Given that the line x/a + y/b = 1 passes through (0,3) and (5,1). Find the value of a and of b and the gradient of the line. 5) The straight line 2y=kx+6c has the same gradient as the line 5x+4y=7 and passes through the point (1,8). Find the value of k and of c. 6) The coordinates of O, A and B are O(0,0) , A(5,0) , B(7,8). Find a) The gradient of AB, b) The equation of AB, c) The area of ▲ OAB, The triangle OAB is reflected in the line x=0. Write down the coordinates of the image of A and of B. 7) The distance between the points (1,2k) and B(1-k,1) is √ 11-9k. Find the possible values of k. 8) The curve x²+y²-4x-5y+4=0 cuts the y-axis at points A and B. It touches the x-axis at the point C. Find the coordinates of points A, B and C. Also find the area of ▲ ABC. ▲ ABC is rotated through 180° about the point C. Find the coordinates of A' and B', the image of the points of A and B. 9) Find the coordinates of the vertices of ▲ ABC formed by the intersection of the lines x + y = 0, x = 0 and y = x - 1. Hence, find the area of ▲ ABC. 10) The coordinates of ▲ OAB are O(0,0) , A(7,0) and B(0,9). If C is the point (3½,4½), find the equation of : a) AB, b) OC, c) The line through C and having the same gradient as OA, d) The line through C and having the same gradient as OB. 11) The lines (k+2)x + 5 = 3y and (k+3)y = 2x - 6 have the same gradient. Find the value(s) of k. PLEASE HELP ME.. I NEED TO FINISH THIS ASSIGNMENT ASAP. THANK U SO MUCH :) Click here to see answer by richard1234(5390)

 Question 494165: Hi, this is on behalf of my son, we are having great irritations in figuring out how to solve this problem: here it is: the area of a rectangular pool with a perimeter of 800 feet is given by the formula f(x)=400x-x(second power) where x represents the length of the pool in feet and f(x) represents the area of the pool in square feet the first number given for the value of x is 50. what I need is help in solving this so that he can solve the remaining so that he can create a scatterplot graph. Thank you, Ricsi Click here to see answer by chessace(471)

 Question 495083: How do you determine the center of a circle if you have the endpoints Click here to see answer by stanbon(60778)

 Question 498785: The graph shows the value of an automobile, which was purchased new for \$25000 based on the number of years you own it. After 3 years, what is the value of the car? (The graph shows that 3 years is in between 20000 and 15000.) What is the answer? Click here to see answer by Theo(3556)

 Question 499640: Write an equation in standard form for the line that passes through (-5,-8) and is perpendicular to 3x+2y=-7 Click here to see answer by nerdybill(7090)

 Question 503531: find the x and y intercepts and graph the equation plotting the intercepts. please show all of your work. -7x-8y=56 Click here to see answer by nanobot101(2)

 Question 505941: What is the slope of any line parallel to the line formed by the equation 16x – 2y = 4 Click here to see answer by solver91311(18785)
 Question 505941: What is the slope of any line parallel to the line formed by the equation 16x – 2y = 4 Click here to see answer by stanbon(60778)

 Question 508211: Hello on my math homework I need to write an equation for a line in 3 forms and show the mathematics used to equate all 3. If you can please help me it is greatly appreciated. Click here to see answer by oberobic(2304)

 Question 508525: what is the area of the triangle? (-7,7), (-12,1) and (-2,1) Click here to see answer by Alan3354(34679)
 Question 508525: what is the area of the triangle? (-7,7), (-12,1) and (-2,1) Click here to see answer by MathLover1(7480)

 Question 509379: Why are there different forms (3 types) of a line? Click here to see answer by solver91311(18785)