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 369480: Find the value of r so that the line passing through (-2,-10)and (r,12) has the slope of -11 Click here to see answer by Fombitz(13828)

 Question 369587: The slope of a line is 2/5. What is the slope of any line parallel to this line? Click here to see answer by Alan3354(31518)

 Question 369591: The slope of a line is -7/6. What is the slope of any line perpendicular to this line? Click here to see answer by acalgebra(30)
 Question 369591: The slope of a line is -7/6. What is the slope of any line perpendicular to this line? Click here to see answer by ewatrrr(10682)

 Question 369580: Find the point that is one-fourth of the way from(2,4) to (10,8). Click here to see answer by CharlesG2(828)

 Question 369619: Find the equation of the line containing the point whose coordinates are (4, 3) and parallel to the graph of 5x + y = −4. Click here to see answer by Fombitz(13828)

 Question 369623: Find the equation of the line that contains the point (4, 5) and is perpendicular to the line y = 5/4x − 3 Click here to see answer by Fombitz(13828)

 Question 370615: (x+4)2 + (y-5)2 = 15 2 the equation is a circle. what is the x-coordinate of the center of the circle? (the 2's are meant to be "squared') Click here to see answer by scott8148(6628)

 Question 370666: Here is my second question. Find the slope of a line perpendicular to the line that passes through the following points. (3,9) and (7,15) Click here to see answer by Alan3354(31518)

 Question 370667: Here is my final question for now. A line k passes through the points (4,2) and (-4,4. A second line h poasses through the points (-8,1) and (8, -3), is line k parallel to line h? Why or why not? (Note--parenthesis in this case do no mean multiply). Click here to see answer by ewatrrr(10682)
 Question 370667: Here is my final question for now. A line k passes through the points (4,2) and (-4,4. A second line h poasses through the points (-8,1) and (8, -3), is line k parallel to line h? Why or why not? (Note--parenthesis in this case do no mean multiply). Click here to see answer by mananth(12270)

 Question 370674: Write an equation of the line with the given slope and the given y-intercept. Leave the answer in the slope-intercept form. -2/3 , y-intercept (0, 5) Click here to see answer by mananth(12270)

 Question 371279: (-3, 5) is located in _____. Quadrant I Quadrant II Quadrant III Quadrant IV Which of the following represents "The product of the abscissa and ordinate is ten"? xy = 10 10x = y 10y = x Click here to see answer by Alan3354(31518)

 Question 371949: not sure what topic is right.i am 49 yrsold been 30 yrs since school.can you show me how to work this problem and tell me why to work it that way. answer this where do these lines meet? x+4y=16 3x+5y=20 Click here to see answer by Alan3354(31518)

 Question 372257: graph the lines containing these points and find their slope Click here to see answer by solver91311(17077)

 Question 372201: I am required to "check" my work when doing equations, etc. Can you explain how I go about that ? Click here to see answer by robertb(4012)

 Question 372540: Find the radius of the circle using these three points:(-13,3),(1,3),(-6,10) and center (-6,3). I thought maybe you put them in separate equations and solve but I have no idea, please help. Click here to see answer by Fombitz(13828)

 Question 372924: 11x- 8y=-48 Writing Linear 3quation's Write the Slope intercept form of the equation of Each line in PLz have all the Step's Iam Very Slow in Math :P Click here to see answer by mananth(12270)

 Question 375293: Find the distance bewteen P and Q P (6,-3) ; Q (-3, 2) Click here to see answer by robertb(4012)

 Question 375296: Find the distance between P and Q P (6, -3) ; Q(-3,2) Click here to see answer by Jk22(389)

 Question 375298: Find the slope of the line passing through each pair of points if possible. P(3,7); Q (6,16) Click here to see answer by mananth(12270)

 Question 375424: which of the following ordered pairs is a solution of the system? x+y=5 and 2x-y=1 A)3,2 B)2,3 C)1,4 D)-2,-3 E)None Click here to see answer by Fombitz(13828)

 Question 375430: solve the system x+y=2 and x-y=4 by the elimination method Click here to see answer by Fombitz(13828)

 Question 375428: solve the system y=2x and x+y=6 by the sustitution method Click here to see answer by Fombitz(13828)

 Question 375431: solve the system 3x-y=8 and x+2y=5 by the elimination method Click here to see answer by ewatrrr(10682)

 Question 375425: solve the system x+y=6 and x=y+2 by the substitution method Click here to see answer by Fombitz(13828)

 Question 375496: find the slope and y-intercept of the graph of each equation y=3x-5 i need help can you guys help me Click here to see answer by Fombitz(13828)

 Question 375539: find the rate of change of the population with respect to time, in number of people per year, in 1990 12.94 million people and in 2003 17.02 million people. Thank you! Shelly Click here to see answer by scott8148(6628)

 Question 375721: how to find the coordinate points of terminal pi/4 in a circle? Click here to see answer by robertb(4012)

 Question 376786: Hi - Need assistance and my tutor is gone for weekend. It is graphing y = -x^2 and y = -(x-2)^2 + 1 I did the y = -x^2 it is a perabola that opens down from zero and then goes out to (-1,-1) (1,-1) (-2,-4)(2,-4) but am confused on the second one - I know that it shifts but uncertain as to formula The first time I did it I shifted it to (1,2) then down one and over one. The next time I did it I shifted it to (2,1) and then down. Am stuck Thanks for your assistance. Carol Click here to see answer by mananth(12270)

 Question 377355: whats the solution for y = 4x 3x - y = 1 Click here to see answer by robertb(4012)