Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

Tutors Answer Your Questions about Graphs (FREE)

Question 186186: how do you find an equation of a line in the graph when the y coordinate is 0,3 and x is 0,-3
Click here to see answer by Alan3354(69443)

Question 186700: Determine whether the graphs of the equations are parallel lines. 8x - 4y = 16 5y - 10x = 3
Click here to see answer by uday1435(57)

Question 186715: can you please help me with the math problem i got stuck on.
my teacher says we need the bottom equation to solve the top equation then to find the answer to the bottom equation after.
0.3x-0.2y=0.5
x-2y=-5
Click here to see answer by nerdybill(7384)

Question 186682: Please help me solve:
find the solution to the equation graphically.
1. 5x - 3 = x - 5
2. 3x + 5 = 4(x - 4) + 4
Thank you.
Click here to see answer by checkley77(12844)

Question 186798: Evaluate the piecewise function for x=0 and x=6.
f(x)={18, if x is less than 0
{7, if 0 is less than or equal to x is less than 6
{-3, if x is greater than or equal to 6
I worked it out to: when x=0, f(x)= -6 so f(0)= -6,
when x=6, f(x)= -3, so f(6)= -3
Am I correct?
Click here to see answer by jim_thompson5910(35256)

Question 186966: Find the slope and y-intercept of the line x = 5
Click here to see answer by Alan3354(69443)

Question 186968: Write the equation of the line passing through (�1, 7) and (�1, 1)
Click here to see answer by Alan3354(69443)

Question 186997: find x-intercept
y=x^2-3x-28
Click here to see answer by jojo14344(1513)

Question 186993: find slope (equation)
m= -6; (-8,6)
Click here to see answer by uday1435(57)

Question 187096: finde slope -3x+2y=4
Click here to see answer by Alan3354(69443)

Question 187322: A line passing through (9, 15) and (2, y) is parallel to a line with slope 2. What is the value of y?
Click here to see answer by stanbon(75887)

Question 187320: Are the following lines parallel, perpendicular?
L1 with equation x � 2y = 4
L2 with equation 2x + y = 2
Click here to see answer by stanbon(75887)

Question 187353: how do you graph y=-4x+1
Click here to see answer by jojo14344(1513)

Question 187345: the linear equation 12x-6y=18 rewrite the equation in slope intercept form graph the equation using the slope intercept formula and explain your result
Click here to see answer by jojo14344(1513)

Question 187454: hello
im doing my homework and i dont get anything that i do
can you please help me
im on problem # 7
solve the system of equations
x+4y=1
2x-3y=-9

Click here to see answer by jim_thompson5910(35256)

Question 187559: please help me to solve this problem in geometry
state condition for parallelness or prpendicularity of two lines determine weather the graph of the equation are parallel,perpendicular or neither?

1. y+3=6x
-6x-y=2

2. y=-4x+3
5y+10x=20

3. y=2x+7
5y+10x=20

4.-3x+y=4
3x-y=-6

5. 6y-x=-12
1/6x+y=3

6. x+y=6
4y-4x=12

7. y=-x+8
x-y=-1

8. 6x+y=-4
6x-y=-1

9. y=-x+8
x-y=-1

i need answer before our class report on monday

thanks for your time i realy appreciate it..
Click here to see answer by Alan3354(69443)

Question 187584: I have seen this problem on here but I am not understanding why they use zero for "n" also I do not understand how to graph this.
Dental Services: The national cost C in billions of dollars for dental services can be modeled by the linear equation C = 2.85n + 30.52, when n is the number of years since 1990.
(a) Find and interpret the C-intercept for the line.
(b) Find and interpret the n-intercept for the line.

(c) Graph the line for n ranging from 0 through 20.

(d) If this trend continues, then in what year will the cost of dental services reach 100 billion?

Click here to see answer by stanbon(75887)

Question 187579: Solve each problem. See Example 8. Demand equation. Helen�s Health Foods usually sells 400 cans of ProPac Muscle Punch per week when the price is $5 per can. After experimenting with prices for some time, Helen has determined that the weekly demand can be found by using the equation d = 600 � 40p, where d is the number of cans and p is the price per can.
(a) Will Helen sell more or less Muscle Punch if she raises her price from $5?
(b) What happens to her sales every time she raises her price by $1?
(c) Graph the equation.

(d) What is the maximum price that she can charge and still sell at least one can?
Click here to see answer by stanbon(75887)

Question 187370: 4x^2 + 25y^2 8x + 100y + 4 = 0
Click here to see answer by Alan3354(69443)

Question 187591: graph
y=-3x+1 and y=3x+1

Click here to see answer by checkley77(12844)

Question 187594: Find the vertex of y=x^+4x-5
Give the coordinates of x and y
Click here to see answer by jim_thompson5910(35256)

Question 187592: Dental Services: The national cost C in billions of dollars for dental services can be modeled by the linear equation C = 2.85n + 30.52, when n is the number of years since 1990.

(a) Find and interpret the C-intercept for the line.

(b) Find and interpret the n-intercept for the line.

(c) Graph the line for n ranging from 0 through 20.

(d) If this trend continues, then in what year will the cost of dental services reach 100 billion?

Click here to see answer by stanbon(75887)

Question 187622: simplify
sqrt(75a^)/sqrt(3)
Click here to see answer by jim_thompson5910(35256)

Question 187621: Evaluate
4 sqrt(81)
Click here to see answer by jim_thompson5910(35256)

Question 187619: Graph
y=-1/3x+1
Click here to see answer by jim_thompson5910(35256)

Question 187633: helow

who can help me to find the answer with a solution of this given
y=-4x+3
5y=10x=20
Click here to see answer by Earlsdon(6294)

Question 187631: helo!
could you please help me and teach me how to solve this given! in geometry and i need the solution on how to solve it

1. y=-4x+3
5y+10x=20

2. y=2x+7
5y+10x=20

3. 6y-x=-12
1/6x+y=3

4. x+y=6
4y-4x=12

5. y=-x+8
x-y=-1

6. 6x+y=-4
6x-y=-1

7. y=-x+8
x-y=-1

please help me again to solve it thanks again!

Click here to see answer by Alan3354(69443)

Question 187630: i lost the answer of my homework
Click here to see answer by Alan3354(69443)

Question 187667: I am having trouble finding book help and with my notes to learn/solve this problem.
Graph each equation:
Y=1/2xsquared
Can you help me?
Click here to see answer by Alan3354(69443)

Question 187674: Hi,
3x^2 + 3y^2 - 6x - 6 = 0 (describe and sketch the given equation)
I believe this is a circle and I've tried "completing the square", but without the b(y) part of the equation, I'm lost. Please help.
Thank you,
Lynn
Click here to see answer by stanbon(75887)

Question 187676: I need help graphing y=4x-3
Thanks.
Click here to see answer by jim_thompson5910(35256)

Question 187678: This one is giving me a fit.
Simplify.
5w^9 z^7* 3w^-2 z^-4 x^5 * 4x^-5
Use only positive exponents to write your answer.
Click here to see answer by stanbon(75887)

Question 187678: This one is giving me a fit.
Simplify.
5w^9 z^7* 3w^-2 z^-4 x^5 * 4x^-5
Use only positive exponents to write your answer.
Click here to see answer by jim_thompson5910(35256)

Question 187680: Hello,
I'm having trouble graphing a "PieceWise" function. The problem:
g(x)={x if x >= 0
{x^2 if x < 0
I have graphed half of the absolute value function from (0,infinity) and half the squaring function from (infinity,0) on the same graph. Can this be done because the absolute value function would color the origin point (0,0) in while the squaring function leaves the origin (0,0) open? I'm probably way off.
I hope this is clearly stated.
Thanks in advance,
Lynn
Click here to see answer by jim_thompson5910(35256)

Question 187691: kuya allan!
i try to solve this but my answer is wrong
please help me how to find the answer of this given harshhh!

-3x+y=4
3x-y=-6

sorry kuya allan if i disturb you!
THANKS AGAIN HIHIHIHI!
Click here to see answer by edjones(8007)

Question 187688: who can help me to solve and find the right solution of this given!

1. y=-x+8
x-y=-1

2. 6x+y=-4
6x-y=-1

3. y=-x+8
x-y=-1

im getting too crazy to find the right solution and the right answer please help naman!

THANK'S FOR HELPING ME AND I REALY APPRICIATE IT
Click here to see answer by jojo14344(1513)

Question 187698: kuya edjones thanks for anwering my question!
6y-x=-12
1/6x+y=3
this is the another given! i try to solve it but the answer is undefind too
am i correct!??

thanks very much!

Click here to see answer by Alan3354(69443)

Question 187705: What is the value of x when 8x-7=5x+2 ?
Click here to see answer by nerdybill(7384)

Question 187768: |-3+6|=3
Click here to see answer by Alan3354(69443)

Question 187815: x-2y-<2
3x+4y-<12
x->0
>,< with - means greater than or less than.

The first line x minus 2y equal to or less than 2
The second line 3x=4y equal to or less than 12
The third line x equal to or greater than 0
This pertains to graphing inequalities
Click here to see answer by jim_thompson5910(35256)

Question 187971: how do I find the slope of a line with only one set of coordinates ex.(1,4)
Click here to see answer by Alan3354(69443)

Question 187343: x is equal to 2
Click here to see answer by Alan3354(69443)

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