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

Tutors Answer Your Questions about Coordinate-system (FREE)

Question 1068613: Determine whether the lines through each pair of points are perpendicular
(-2,-7) and (3,13)
(-1,-9) and (5,15)
Click here to see answer by josgarithmetic(39613)

Question 1068659: A map of the town that Annie and Barbara live in can be represented by the Cartesian plane. Annie is located at (3,5) and Barbara says she is located at (-6,2). They agree to meet the midpoint of their current locations. However, it turns out that Barbara read the map wrong, and she is actually at (-10,4). What is the positive difference in the x-coordinates of where they agreed to meet and where they should actually meet?
Click here to see answer by Fombitz(32388)

Question 1068660: A point (, d+3 ) is 3d units away from the origin. What is the smallest possible value of d?
Click here to see answer by Fombitz(32388)

Question 1068661: Suppose you graphed every single point of the form (2t + 3, 3-3t). For example, when t=2, we have 2t + 3 = 7 and 3-3t = -3, so (7,-3) is on the graph. Explain why the graph is a line, and find an equation whose graph is this line.

Click here to see answer by Fombitz(32388)

Question 1068663: Wanda is trying to locate the Fermat point P of triangle ABC, where A is at the origin, B is at (10,0), and C is at (3,5) (the Fermat point is the point such that the sum of its distances from the vertices of a triangle is minimized). She guesses that the point is at P = (4,2), and computes the sum of the distances from P to the vertices of triangle ABC. If she obtains , where m and n are integers, what is m + n?

Click here to see answer by Fombitz(32388)

Question 1068664: Segment s1 has endpoints at (3+,5)$ and $(4,7)$. Segment s2 has endpoints at (6-,3) and (3,5)$ Find the midpoint of the segment with endpoints at the midpoints of s1 and s2. Express your answer as (a,b).
Click here to see answer by KMST(5328)

Question 1069033: Is it parallel, perpendicular, or neither
3x-9y=-19
18x+9y=-19
Click here to see answer by ikleyn(52747)

Question 1069300: explain how to write an equation for the line that contains the point (2,3) and is parallel to thr graph of x+2y=2
Click here to see answer by Alan3354(69443)

Question 1069368: there is a table:
x y
(1,9)
(2,18)
(3,36)
(4,72)
is this a linear or exponential function? explain
Click here to see answer by ankor@dixie-net.com(22740)

Question 1069367: "a social media website had 700 000 followers in 2009. The number y of followers increases by 6% each year. a) write an exponential growth function that represents the number of followers t years after 2009. b) how many people will be following the website in 2017? round your answer to the nearest thousand." i need this with shown work, i have no idea what to do, please help thank you.
Click here to see answer by Boreal(15235)

Question 1069879: Given the line with the equation x= -4
a) find at least three ordered pairs that satisfy the equation
b) find the slope of the line
c) graph the line
Click here to see answer by Fombitz(32388)

Question 262337: The points(-1,-7) and (5,10) are the endpoints of the diameter of a circle. Graph the circle. Find an equation of the circle. Cordinates of Midpoint of diameter of a circle=((x1 x2)/2, (y1 y2)/2): ((-1 5)/2, (-7 10)/2)=(2, 3/2). Where a=2 and b=3/2, radius r^2 =(a-x1)^2 (b-x2)^2: r^2=(2--1)^2 (3/2--7)^2, r=9.01. Eqn of circle: (x-a)^2 (y-b)^2=r^2: (x-2)^2 (y-3/2)^2=81.25.
Click here to see answer by cov20(1)

Question 1070406: let the width and tje length be real numbers.The perimeter remains constant 24cm.draw the graph 1< w<11

Click here to see answer by ikleyn(52747)

Question 1071033: What is 3y -9 equal to
Click here to see answer by josgarithmetic(39613)

Question 1071046: Find the equation of a plane passing through are it (1,2,3),(1,-4,3),(-1,3,2)
Click here to see answer by Alan3354(69443)

Question 1071104: So i'm working on this problem or whatever and it told me to find find the slope of the line graphed below. The coordinates were (-1,-1) and (4,2) i looked up someways and it told me m=rise/run and y2-y1/x2-x1 and i did that like so... -1-4 over -1-2 and it gave me -5 over -3 is this right or did i do someting wrong
Thanks ~Leila
Click here to see answer by Alan3354(69443)

Question 1071108: Slope... m=rise/run y2-y1/x2-x1 HEEEEEEEEEEEEEELP
coordinates are (-2,2) and (3, -2) how does this work?
Find the slope of the line graphed below.
Click here to see answer by Alan3354(69443)

Question 1071223: Solve the following pairs of simultaneous equations:
X+2y=3,X-2y=3
Y=2�-1,Y=3x-2
2y=6x-4,Y=3x-2
Click here to see answer by josgarithmetic(39613)

Question 1071223: Solve the following pairs of simultaneous equations:
X+2y=3,X-2y=3
Y=2�-1,Y=3x-2
2y=6x-4,Y=3x-2
Click here to see answer by ikleyn(52747)

Question 1071681: Graph the line y=-1

Click here to see answer by Fombitz(32388)

Question 1072314: What is an equation of a line which is parallel to 3y = 8x + 5 which intercepts the y-axis at 2 ?

Click here to see answer by Fombitz(32388)

Question 1072560: When x=3, find the ordered-pair solution of y=3x-2

Click here to see answer by Alan3354(69443)

Question 1072441: Determine the two ordered pair solutions of the equation -3X -2y=5, given (3,) and (-1,)
Click here to see answer by Fombitz(32388)

Question 1073215: If the point (a − 1, a + 1) lies on the line y = 2x − 3, what is the value of a?
Click here to see answer by josgarithmetic(39613)

Question 1073212: Find the distance between the points of intersection of the graphs of y = 2x^2 � 4x+ 1 and 2x - y = - 21.
Click here to see answer by josgarithmetic(39613)

Question 1073999: X=-4y^2-1
Find the x and y intercepts of the above equation
Click here to see answer by josgarithmetic(39613)

Question 1074033: The slope of the line below is -0.75. Write the equation of the line in point-slope form, using the coordinates of the labeled point. Do not use parenthesis on the y side.

Click here to see answer by ikleyn(52747)

Question 1074115: Pedro is traveling on a toll road and plans to exit 5 miles ahead and pay $1.75.He continues and travels 9 miles to pay $2.75.I am trying to figure out the y-intercpt.

Click here to see answer by ikleyn(52747)

Question 1074286: 5^x=3x+4

Click here to see answer by Edwin McCravy(20054)

Question 1074406: What is the distance between the y -axis and point (6, -3)
Click here to see answer by josgarithmetic(39613)

Question 1074902: Find the foci of the ellipse whose major axis has endpoints $(0,0)$ and $(13,0)$ and whose minor axis has length 12.
Enter your answer as a list of pairs separated by commas.
Click here to see answer by KMST(5328)

Question 1075928: the coordinates of two points are A(-2,6)and B(9,3). find the coordinates of the point con the axis such that AC=BC
Click here to see answer by Alan3354(69443)

Question 1075492: Complete the table for each function.
1. f(x) = Sqrt (-x) 2. g(x) = 1.5 Sqrt (x) 3. h(x) = Sqrt (x+2)
The table looks like this:
x, 0, 1, 4, 9
y, ----------- The y is blank.
Click here to see answer by Fombitz(32388)

Question 1077112: What ordered pair is a reflection of (-3,-4) over the y-axis?
Click here to see answer by stanbon(75887)

Question 1077451: The amount of time t it takes a flame to go out in a closed container is a linear function of the volume of the container x. A flame in 748 mL container takes 14 seconds to go out and a flame in a 1100 mL container takes 22 seconds. Write a linear function that relates t to x.
Click here to see answer by srinivas.g(540)

Question 1077449: By reading a graph on defense spending in the country of Warpeas, you discover that in year 0 the country spent $176 million on defense and in year 8 spent $528 million. Write a linear function that relates y (in millions of dollars) to x.
Click here to see answer by srinivas.g(540)

Question 1077613: The charges for renting a moving van are $50 for the first 30 miles and $8 for each additional mile. Assume that a fraction of a mile is rounded up. (i) Determine the cost of driving the van 82 miles. (ii) Find a symbolic representation for a function f that computes the cost of driving the van x miles, where 0
Click here to see answer by josgarithmetic(39613)

Question 1077612: f(x) = 2x+ 2,if x les than 0
2x^2 -2 _>0
graft the function
Click here to see answer by Fombitz(32388)

Question 1078132: The point (-3, -4) divides the line joining A(-6, -7) and B in the ratio 1:3. Find the coordinates of B

please with clear explanation cuz i am slow. thank you
Click here to see answer by Boreal(15235)

Question 1078130: in what ratio does (-5, -6) divide the line segment joining (-9, -10) and (7, 6)
please with clear explanation bc i am slow. thank you
Click here to see answer by josgarithmetic(39613)

Question 1078174: Can you please help me to sketch the graph, given is y=ax^2+bx+c where a<0 ; b<0 ; c<0 and ax^2+bx+c has only one solution.
Click here to see answer by KMST(5328)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680