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

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Question 148979: What steps are needed to graph the lines lines: y = 0.15x +0.79 : y = 0.11x - y = -0.85

Click here to see answer by stanbon(26274)

Question 149141: find the y-intercept of 6x-y=-12
Click here to see answer by checkley77(7049)

Question 149797: Don't know how to set up this one.

A rectangular garden has dimensions of 18 feet by 13 feet. A gravel path of uniform width is to be built around the garden. How wide can the path be if there is enough gravel for 516 square feet?

Thank you for your help. Your assistance is greatly appreciated.
Click here to see answer by nerdybill(2446)

Question 150087: The sum of the coordinates of the solution to the system
2x-y=7
3x-2y=11
is?
Click here to see answer by Alan3354(6079)

Question 150342: I need to find a equation for this two points (42,20)and (52,10)
Click here to see answer by jim_thompson5910(13794)

Question 151069: graph: y = 2x +8
Click here to see answer by vleith(1977)

Question 152932: solve each system by graphing.
y=-1/2x-3
y=-7/2x=3
Click here to see answer by checkley77(7049)

Question 153854: how cant i draw a figure that represents 100%.and label 100%
Click here to see answer by vleith(1977)

Question 153871: I'm in geometry now but my teacher wants to refresh our memory in algebra 1. here is the question:
"Find the coordinates of three points that lie on the graph of each equation. Graph the points and the line representing the equation. Then name the coordinates of one point not on the line."
The equation is y=x+5
How would i solve this and then graph it?
Please help me!!!!!!!
Click here to see answer by stanbon(26274)

Question 153708: Find the center of a circle with the equation x2 + y2 + 2x + 4y - 9 = 0
Click here to see answer by orca(409)

Question 153709: Find the radius of a circle with the equation x2 + y2 - 6x - 12y + 36 = 0
Click here to see answer by orca(409)

Question 154246: Complete the square and write the equation in standard form. Then give the center and radius of the circle
x^2+y^2-2x-4y-4=0
Click here to see answer by orca(409)

Question 154607: When you are plotting coordinates on a graph do you plot the negative numbers first?
Click here to see answer by checkley77(7049)

Question 154747: If ship is anchored at origin of 3 dim. coordinate sys. and 2 probes are sent below the surface, 1st probe stops at (-8, -4, 6) and 2nd probe stops at
(4, -9, -2) which probe is farather from the ship?
Click here to see answer by stanbon(26274)

Question 154852: complete the table of values below for the equation y = 3x - 2
X| y
-1|
0 |
1 |
2 |

Click here to see answer by Earlsdon(4900)

Question 154852: complete the table of values below for the equation y = 3x - 2
X| y
-1|
0 |
1 |
2 |

Click here to see answer by jim_thompson5910(13794)

Question 154785: 2x+3x-12
Click here to see answer by jojo14344(1483)

Question 154880: I need help, can someone please help!!!
I am trying to find the range and domain of this equation, using interval notation
.
, can you please help, show in interval notation, Thanks
Click here to see answer by Fombitz(2113)

Question 154927: k(-2,-8)
y(8,3)
ky
Click here to see answer by checkley77(7049)

Question 155092: 3y-9x=30
How do I graph this equation?
Click here to see answer by checkley77(7049)

Question 155091: Using Excel, plot each point on the same graph where the first coordinate is the number of hours and the second coordinate is the number of cars sold (hours, cars). After plotting each point, explain if there is a linear relationship between the number of hours worked and the number of cars sold.
Sales Hours Worked Cars
Sold
Tim 40 3
Bob 26 5
Brandi 10 1
Kurt 60 1
Kelly 30 7
Graph:

Explanation of linear relationship:
What is the first step I take to answer this question?
Click here to see answer by stanbon(26274)

Question 155153: y=-1/5x+8 y=1/5x-2 will the graph lines be parallel, perpendicular lines or neither
Click here to see answer by oscargut(682)

Question 155163: 3x+2y=5
Click here to see answer by checkley77(7049)

Question 155626This question is from textbook Algebra connections
: How can you plot using its (x, y) coordinatesThis question is from textbook Algebra connections

Click here to see answer by Alan3354(6079)

Question 156802: can you find the points where the line x + 2y = 6 crosses the x axis and y axis?
Click here to see answer by nerdybill(2446)

Question 157577: The steepness, or grade, of a road is expressed as a percent. If a road rises 3 feet for every 24 horizontal feet, what is the sope of the road? what percent grade is this?
Click here to see answer by Earlsdon(4900)

Question 157595: Write a function rule for each situation.
the total cost of renting a movie for n days if it costs $3.50/day
Click here to see answer by nerdybill(2446)

Question 157700: ( the radius of the cylinder is 10 ft and its altitude measures 24 ft)
If 1 gallon of paint covers 300 ft2, how many gallons are needed to paint the surface if it requires three coats?
Click here to see answer by jojo14344(1483)

Question 157978This question is from textbook
: the problem is y= 3.2x-1.5 and y= -2.7x-3.7
My coordinates don't match the answers that are given in the book. How did they come up with the solution of (-0.37, -2.69)
Thanks for your assistance,This question is from textbook

Click here to see answer by checkley77(7049)

Question 158077: Help is need to solve this problem as attempts have been made for days without success. Thank you for the assistance.
?) Consider the function f(x) = x^2 + 4x+ 1. Find the x-coordinate of the vertex of this parabola. Subsititue the two integers to the left and right of h into the function to find the corresponding y.
Below is an attempt to solve this problem.
x = (-b)/ 2a a=1 b=4 c=1
x = (-4)/(2*1)
x = (-4)/2
x = -2

Click here to see answer by Earlsdon(4900)

Question 158086This question is from textbook mathematics in action
: When doing input and out put graphing, if the output starts at a high number do you start at the bottom and go up?This question is from textbook mathematics in action

Click here to see answer by midwood_trail(310)

Question 158317: Using the general point method find the equation of the straight line through the given points (4;7), (-2;2)
Click here to see answer by checkley77(7049)

Question 158316: In each case find the equation of the straight line through the given points (4;7), (-2;2)
Click here to see answer by checkley77(7049)

Question 158315: In each case find the equation of the straight line through the given points (4;7), (-2;2)
Click here to see answer by checkley77(7049)

Question 158735: Find the distance to the nearest hundredths between the given points. Then find the coordinates of the midpoint of the line segment connecting the points.
P1(6,-1)and P2(-3,-2)

I belive I have the first answer, 9. If this is correct, how do I find the midpoint?
Click here to see answer by scott8148(3382)

Question 158891: Can someone please help,
Find if is symmetrical to
.
y-axis?
.
x-axis?
.
origin?
.
Thanks ahead of time,Levi
Click here to see answer by stanbon(26274)

Question 158975This question is from textbook college algebra and trig
: the question asks you to find all points (x,y) with x=y that are 4 units from (1,3).
this is a circle problem, and i have set the equation up like this:
(x-1)2 + (y-3)2 = 16 (where the "2" s are squares, obviously)
from here, i have tried several ways to solve the equation, but have run into snags. ThanksThis question is from textbook college algebra and trig

Click here to see answer by gonzo(654)

Question 159035: 6x-5y=15
Click here to see answer by checkley77(7049)

Question 159108This question is from textbook geometry
: m(x,y) is the midpoint of CD with endpoints c(5,9) and d(17,29).Find the values of x and y?This question is from textbook geometry

Click here to see answer by Alan3354(6079)

Question 159155: how do plot a B on the coordinate diagram
Click here to see answer by Alan3354(6079)

Question 158944This question is from textbook pre-algebra
: how do i get the point coordinate of p(5,5)This question is from textbook pre-algebra

Click here to see answer by midwood_trail(310)

Question 159991This question is from textbook Beginning Algebra

: Using the factoring methd, solve for the roots of each quadraic equation. Place equation in standard form before factoring.
x^2 + 3 - 40=0
x^2 = 10x - 24
p^2 +15p + 25 = 6p + 5This question is from textbook Beginning Algebra

Click here to see answer by Fombitz(2113)

Question 159991This question is from textbook Beginning Algebra

Click here to see answer by checkley77(7049)

Question 160931: 2x-4y=6
3x+y=-5
what are the coordinates of the point of intersection?
Click here to see answer by KnightOwlTutor(292)

Question 160934: At which point does the graph of f(x)=x^2+3x-18 intersect the x-axis?
Click here to see answer by nerdybill(2446)

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