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

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Question 882569: Find the equilibrium point for the pair of demand and supply functions.
D(p) = 700 - 32p
S(p) = 380 + 17p

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Question 883971: if the endpoints of the diagonal of a rectangle are (4.5) and (-5-3) what are the coordinate of the other two vertices?














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Question 884164: 10 > 5x - 2y
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Question 884366: Is (-1,0) a solution of -3x - 3y=2? Yes or No
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Question 884365: What is the slope and y intercept of -2x+3y=3
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Question 885868: Graph the pair of equations on the same axes. Give the coordinates of the point where the lines intersect.
x + y = 2
x – y = 6

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Question 885957: c)Find the coordinates of the vertex of the parabola as well as those of the points where the
parabola intersects the x- and y-axes?
The parabola graph is y=x^2+2x-3

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Question 886051: (4,?) is on the line below. Find the other half of the coordinate.
y = 2/7 x + 3

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Question 886265: Change the equation 9x-8y+7 into an equivalent equation written in the slope-intercept form.
Click here to see answer by Alan3354(69443) About Me 

Question 886638: I NEED TO FIND THE MIDPOINT BETWEEN A AND B WHEN A IS (-1,5) AND B IS (7,-3).
I COME UP WITH POINT (3,1)--IS THAT RIGHT?

Click here to see answer by josgarithmetic(39616) About Me 

Question 886627: I need to calculate the distance between point a and b when a is (-1,5) and b is (7,-3). i come up with the square root of 128. Can that be right when there is no exact square root of 128?
Click here to see answer by josgarithmetic(39616) About Me 
Question 886627: I need to calculate the distance between point a and b when a is (-1,5) and b is (7,-3). i come up with the square root of 128. Can that be right when there is no exact square root of 128?
Click here to see answer by Edwin McCravy(20054) About Me 

Question 886966: Given f(x) below, graph over the domain [-3, 3], what is the range?
f(x)={x if x>=0
{1 if -1<=x<0
{x-2 if x<-1

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Question 887976: find the equation of line containing (4,-2)and perpendicular to the line.
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Question 887977: find the equation of line containing (4,-2)and perpendicular to the line.
find the equation of a line containing (5,3) that is parallel to x axis

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Question 888294: m=2/3 ; P(6,2)
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Question 888849: Find the lengths of the medians of the triangle with vertices A(1, 3), B(2, 6), and C(8, 1). (A median is a line segment from a vertex to the midpoint of the opposite side. Round your answers to one decimal place.)
Click here to see answer by Fombitz(32388) About Me 

Question 890329: what is the ordered pair for y=-3x+8 when x=5
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Question 890328: what is the ordered pair for y=-3x+8 when x=4
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Question 890735: Prove that the points A(-2,-2), B(2,1) and C(6,4) are on a straight lineز Show your work.
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Question 890737: Prove that the triangle ABC whose vertices are A(2,-1), B(2,1) and C(-1,1) is a right-angled triangle. Calculate its area.
Click here to see answer by Alan3354(69443) About Me 

Question 890717: 10x+3y=75 , 6x-5y=7

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Question 891052: Graph 3x+12y=-30
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Question 893090: I have 2 questions I can't figure out.
Click here to see answer by richwmiller(17219) About Me 

Question 893091: Indicate the solution set for the system of linear inequalities by shading the appropriate region.

y < −x + 4
y > −x − 4

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Question 893923: What is the area of the triangle formed by the three points (0,0), (2,4) and (4,2)?
Click here to see answer by fcabanski(1391) About Me 

Question 895043: Parallelogram ABCD is placed on a coordinate grid. A (5,-1) B (7,4), and C (7,8). Find the coordinates for D.
Click here to see answer by Fombitz(32388) About Me 

Question 895693: Draw the parallelogram with vertices A(2, 3), B(6, 3), C(4, 9), and D(8, 9) on a coordinate plane. (Each side of the quadrilateral should contain its vertices.
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Question 896183: Which graph represents the inverse of h (x)=-3x+6? how would this appear on a graph?i
Click here to see answer by KMST(5328) About Me 

Question 896766: if A(3,0) B(0,4) and C(0,0) are the vertices of a triangle find length of AC without plotting
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Question 897190: One of the problems on my geometry homework is "Write the equation of each line in slope-intercept form."
through (-6,2) and (3,6)

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Question 897190: One of the problems on my geometry homework is "Write the equation of each line in slope-intercept form."
through (-6,2) and (3,6)

Click here to see answer by MathTherapy(10551) About Me 

Question 897743: Plot 1 2/3 and 2 5/6 on a number line
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Question 898098: find the perimeter of rectangle with vertices of (-1,5),(3,5),(3,-4)and (-1,-4).
Click here to see answer by josgarithmetic(39616) About Me 

Question 899437: Whats the equation of a line with a slope of 2/3 and a y-intercept of (0, -2)?
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Question 899437: Whats the equation of a line with a slope of 2/3 and a y-intercept of (0, -2)?
Click here to see answer by richwmiller(17219) About Me 

Question 898749: Sketch the graph of a function whose domain is the interval [0, 4] and whose range is the set of two numbers {1, 3}.
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Question 900127: (?,5) 3x+8y-7=0
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Question 900220: Please help me with this question…Im not sure how the lines on the graph should look.
Complete the table of sol and use the results to graph the equation.
y=-x+4
x…-1, 0, 2
y…..
Should I just plug in the numbers they give for x?

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Question 900383: hello I'm having trouble with this problem
Points in quadrant IV have a ______ x-coordinate and a ______ y-coordinate.
a.negative, negative
b.positive, positive
c.positive, negative-i picked
d.negative, positive

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Question 900389: hello I'm having trouble with this problem
which of the following are like terms?
a.7t+77
b.77+7t^2
c.7t+77t-i picked
d.77t-7t^2

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Question 900397: hello I'm having trouble with this problem
using the distance formula,d=/(x^2-x^1)^2+(y^2-y^1)^2,what is the distance between point (-1,0) and point (8,7) rounded to the nearest tenth?
a.11.4 units
b.4.1 units
c.7.0 units-i picked
d.13.0 units

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Question 900399: hello I'm having trouble with this problem
Using the Quadratic Formula, which of the following is the solution to the quadratic equation 5x2 + 10x – 5 = 0?
a..x=-1-√5,x=-1+√5
b.x=-1-√2,x=-1+√2
c.x=-1-√201,x=-1+√201-i picked
d.x=-1-√2,x=1+√2

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Question 900399: hello I'm having trouble with this problem
Using the Quadratic Formula, which of the following is the solution to the quadratic equation 5x2 + 10x – 5 = 0?
a..x=-1-√5,x=-1+√5
b.x=-1-√2,x=-1+√2
c.x=-1-√201,x=-1+√201-i picked
d.x=-1-√2,x=1+√2

Click here to see answer by richwmiller(17219) About Me 

Question 900417: hello I'm having trouble with this problem
which of the following is the product of (-x-7)(3+1)?
a.-3x^2+20+7
b.-3x^2-20x+7
c.3x^2-20x-7
d.-3x^2-22-7-i picked

Click here to see answer by ewatrrr(24785) About Me