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What are the coordinates of the conic sections?

Y^2-4x+4y-4=0

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The sum of two numbers is 84.The first is 9 more than 4 times the second.Find the first number.


x + y = 84
x = 4y + 9
so 4y + 9 +y = 84
5y = 75
y = 15
x = 60 + 9 = 69
Check
69 + 15 = 84

Apr 21, 2014 | Computers & Internet

1 Answer

What is the y and x intercept of x+4y=4


x-intercept: set y=0, and find x=4
The intercept point on the x-axis is (4,0)
y-intercept: set x=0, and find y=4/4=1
The intercept point on the y-axis is (0,1)

Jan 12, 2012 | Mcgraw-Hill Glencoe Algebra 1 Florida...

1 Answer

Solve y in terms of x using this equation x=4y+5


what is the value of x?

if x = 1 in the equation then,
1 = 4y+5
1 - 5 = 4y
-4 = 4y
y = -4/4
y = -1

Jun 30, 2011 | Computers & Internet

2 Answers

2X+4Y=-8


2x + 4y = -8 ; divide each side by 2
x + 2y = -4 ; subtract x from both sides
2y = -4 - x ; rearrange
2y = -1x -4 ; divide each side by 2
y = -1/2x - 2 ; relate to slope/intercept form of line (y=mx+b)

implies there are multiple solutions that fall along a line with slope -1/2 and y intercept of -2
'
\ '
++++++++++
\ '
\ '
Sample points on this line are (-4,0), (-2,-1), (0,-2), (2,-3)

Nov 04, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

WHEN GRAPHING A CIRCLE ON THE TI83, THERE ARE POINTS MISSING.


Use the DRAW program.
Press [2nd][PRGM] (DRAW)
Select [9:Circle (]
Command echoes on main screen
Complete the command with coordinates of the center and the radiius
Close parenthesis and press [ENTER]
The circle is displayed.

Ex: Circle(0,3,2) draw a circle with cntere at (0,3) and radius equal to 2.

Alternatively: If the conics application is on the calculator run it.
Press [APPS]
Select [Conics]
Select [1:CIRCLE]
Choose the canonical form (X-H)^2 + (Y-K)^2=R^2 where H, and K are the coordinates of the center and R is the radius.
You will be prompted to enter the values for H,K, and R

You can also use the general equation for a circle aX^2 +aY^2+BX+CY +D=0
Enter the values of a, B, C and D.Change the values to get what you want.

Apr 01, 2010 | Texas Instruments TI-83 Plus Calculator

2 Answers

How do I solve x and y in the following equations? 5x+3y=6 2x-4y=5 Thank you


You can solve it with following method.

5x+3y=6 2x-4y=5
So 5x=6-3y so 2[(6-3y)/5]-4y=5
So x=(6-3y)/5 so 12-6y-20y=25
so -26y=25-12
so -26y=13
so y= -(1/2)
2x-4y=5
so 2x=5+4y
so 2x=5+4(-1/2)
so 2x=(10-4)/2
so 2x=6/4
so x =3/2

The value of x=3/2 and value of y= -1/2

Let me know if you need further assistance.
Thanks for using FixYa.

Mar 03, 2010 | Office Equipment & Supplies

1 Answer

2x-4y=8 simplify


2x-4y=8
=> 2[x-2y]=8
=> x-2y=8/2

=> x-2y=4

Feb 07, 2010 | Mathsoft StudyWorks! Mathematics Deluxe...

1 Answer

Coordinates


This is an equation of a straight line, and we can easily find the the coordinates where this line intersects the axis in following ways:-

for x-axis:-
put y=0, 4x+2*0=8
4x =8
x =8/4
x =2
so intersection coordinates ate (2, 0)

for y-axis:-
put x=0, 4*0+2y=8
2y =8
y =8/2
y =4
so intersection coordinates ate (0, 4)

Thanks

Zulfikar ali
ali_zulfikar@yahoo.com
9899780221

Jan 26, 2009 | SoftMath Algebrator - Algebra Homework...

1 Answer

How do i include an = sign in a math problem ex. 4y=2x 4


See this solution http://www.fixya.com/support/t663157-calculate_equation,

also in the case of your example:

4y=2x4 (4 times y = 2 times x times 4, moving the 4 over makes it divide by 4)

y=2x4 (the 4's cancel out, 4 divided by 4 = 1, 1 times anything is the same)
4

so y=2x (if we move x over it becomes divide by)

so y=2 (y diveided by x = 2 is as far as you can go)
x

Jun 26, 2008 | Casio FX-300MS Calculator

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