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

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Question 203573: 1.Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50.
a) Set up an equation for the perimeter involving only L, the length of the rectangle.
Answer:
b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.
2.5x+4y=12 for y
Answer:

Show your work here:
b) When graphed, this equation would be a line. By examining your answer to part a, what is the slope and y-intercept of this line?
Slope = ______
Y-intercept = _____
c) Using your answer from part a, find the corresponding value of y when x = 16.

Click here to see answer by stanbon(26268)

Question 203621: -x+5y=-15
Click here to see answer by checkley77(7049)

Question 203905: point A (-4,1) is in the standard (x,y) coordintae plane.what must be the coordinates of point B so that the line x=2 is the perpendicular bisector of AB
Click here to see answer by vleith(1977)

Question 204137: 7x+y=50
8x+9y=10
Click here to see answer by RAY100(1637)

Question 204132: 3. Construct the image of under the translation pictured in the figure by using the following:
1. Tracing paper
2. Compass and straightedge

Click here to see answer by RAY100(1637)

Question 204974: Find the slope of the line that contains the points (–4, –2) and (1,1).
Click here to see answer by RAY100(1637)

Question 204988: find the x and y intercepts of the function f(x)= x to the third - 9x
Click here to see answer by stanbon(26268)

Question 204990: solve for x: log(x + 2) + log(x-1)=1
Click here to see answer by stanbon(26268)

Question 204980: Write the equation in standard form using only integers and a positive coefficient for x. Match your result to the correct answer below.
a..x + 3y = 6
b...x – 3y = 2
c...–x + 3y = –6
d...x – 3y = 6
Click here to see answer by Alan3354(6079)

Question 204989: find the domain of:
(A) f(x)= the square root of (-x squared - 4x + 5)
(B) f(x)= ln(4t-3)
(C) f(x)= 1 over (x to the third + 3x squared - x - 3)
Click here to see answer by stanbon(26268)

Question 204979: Line l goes throught the point (5,–2) and is perpendicular to the line through (–2, 1) and (–4, –2). Find the slope of l. Match your result to the correct answer below.
A) - 2/3
B) - 3/2
C) 7/3
D) 0
Click here to see answer by Alan3354(6079)

Question 205019: Line l goes through (1, 3) and is parallel to the line through (4, 3) and (–3, 1). Find the slope of l. Match your result to the correct answer below.
A) 7/2
B) 3
C) 2/7
D) Undefined

Thank you
Click here to see answer by Earlsdon(4900)

Question 205018This question is from textbook Longman Mathematics foe IGCSE book1
: Write down the equations of the line that are parallel to
y=8x-14, passing through (0,8.4)This question is from textbook Longman Mathematics foe IGCSE book1

Click here to see answer by checkley77(7049)

Question 205108This question is from textbook Longman Mathematics for IGCSE book1
: Write downthe equations of the lines that are parallel to
2y=5x+7, passing through (0,-3.5)
This question is from textbook Longman Mathematics for IGCSE book1

Click here to see answer by Alan3354(6079)

Question 205141This question is from textbook Longman mathematics foe IGCSE book 1
: Write downthe equations of the lines that are parallel to
2y=5x+7, passing through (0,-3.5)
This question is from textbook Longman mathematics foe IGCSE book 1

Click here to see answer by checkley77(7049)

Question 205452: how to graph:
y=3x-1
Click here to see answer by checkley77(7049)

Question 205629This question is from textbook
: Please help me to understand how to solve and graph for these problems
This question is from textbook

Click here to see answer by Alan3354(6079)

Question 205933: how are the quardrents numbered

Click here to see answer by rfer(2688)

Question 205952: give the equation of a line whose graph concides with x+2y=4

Click here to see answer by Alan3354(6079)

Question 206310: I need help...
Line l goes through (1,3) and is parallel to the line through (4,3) and (–3,1). Find the slope of l. Match your result to the correct answer below.
A) 7/2
B) 3
C) 2/7
D) Undefined

Thank you!
Click here to see answer by Alan3354(6079)

Question 206377: I need to graph 3x+4y=16 and also 2x+3y=8x-10?
Can you help me I need it ASAP
Click here to see answer by checkley77(7049)

Question 206576This question is from textbook Longman mathematics for IGCSE Book1
: The line joining (-2,1) to (6,4), is parallel to the line joining (-q,5) to (4,q). Find the value of q.
It would certainly be a great pleasure for me if you solve my question.
Thank you very much indeed.This question is from textbook Longman mathematics for IGCSE Book1

Click here to see answer by nerdybill(2446)

Question 206611: Brendan enjoys mountain biking. He has found that the maximum gradient up which he can cycle is 0.3 and the maximum gradient that he can safely descend is 0.5. his map has a scale of 2cm to 1 km with contours every 25m.
a-What is the minimum distance between the contours on his map that allows him to go uphill?
b-What is the minimum distance between the contours on his map that allows him to go downhill?
Please I need your help. This question really confuses me. Solve this queston as soon as possible. Thank you very much indeed!
Click here to see answer by Theo(675)

Question 206844: Could someone help me out here; find the coordinates of the point C, halfway between the points A(5,1) and B(-2,7). I dont really understand how this works =(
Click here to see answer by Alan3354(6079)

Question 207448: The questions says: Write 4x + 9y in polar form.
What does it mean to convert to polar form?
How is this done?
Thank you.
Click here to see answer by Edwin McCravy(2922)

Question 207490: the record high temperature for a date is 95.6 degrees above zero which real number corresponds to the situation
Click here to see answer by stanbon(26268)

Question 207611: 3x + 4y =12 graph the equation on the coordinate system
Click here to see answer by checkley77(7049)

Question 207611: 3x + 4y =12 graph the equation on the coordinate system
Click here to see answer by vleith(1977)

Question 207615: How do I plot this equation on a graph? y=|x|+3
Click here to see answer by Edwin McCravy(2922)

Question 207614: How do I plot this equation on a graph? y=|x|+3
Click here to see answer by Edwin McCravy(2922)

Question 207872: (5,-3) (-1,5)
Click here to see answer by checkley77(7049)

Question 208444: y=2x-3
Click here to see answer by Alan3354(6079)

Question 208552: How do i answer this problem An equation of the form y=kx where k =/ 0
describes a direct variation linear extra polation
Click here to see answer by Alan3354(6079)

Question 208782: Solve for the variable. non-integer answers may be left in fractional form or decimal form
3/5x + 7/10= 1/3x + 3/2
Click here to see answer by checkley77(7049)

Question 208856This question is from textbook merrill geometry applications and connections
: how do i describe the possible locations, in terms of quadrants or axes, for point a(x, y) if x and y satisfy the following conditions...... A. XY< 0 ------ B. XY> 0 ---------- C. XY=0This question is from textbook merrill geometry applications and connections

Click here to see answer by stanbon(26268)

Question 209015: a triangle region has a perimeter of 66 meters. the length of the first side is two-thirds of the second side. the length of the third side is 14 meters shorter then the second side. what are teh lengths of the three sides of the triangular region?
Click here to see answer by rfer(2688)

Question 209152: how can you describe a pattern formed by points
Click here to see answer by rapaljer(3620)

Question 209286: Divide:
(15x^6 - 5x^4 + 25x^3)/ 5x^3
Click here to see answer by Earlsdon(4900)

Question 209306: Factor completly:
16x^2 - 81
Click here to see answer by stanbon(26268)

Question 209687: write the coordinate of each point:
1.the point 3 units to the left of the y- axis and 4 units above the x- axis
2.the point 5 units to the right of the y-axis and on the x-axis
3.the point 6 units to the right of the y-axis and 6 units below the x-axis
Click here to see answer by stanbon(26268)

Question 209760This question is from textbook prentice hall mathematics
: How do i graph the points on a coordinate plane?This question is from textbook prentice hall mathematics

Click here to see answer by jim_thompson5910(13787)

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