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

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Question 193967: Solve by graphing. Indicate whether each system is
independent, dependent, or inconsistent.
y=3x-4
y=-2x+1
Click here to see answer by Mathtut(3670)

Question 194021: The lines 0.11x-y=0.85 and y=0.15x+0.79 are the lines intersecting, parallel, or perpendicular
Click here to see answer by stanbon(75887)

Question 193997: create a graph with precisely two odd vertices and two even vertices. . state which of your vertices are even and which are odd. use a dot and letter to mark each vertex.
Click here to see answer by solver91311(24713)

Question 194052: How do I find an equation of the line that has the same y-intercept as the line x-3y=6 and contains the point (5,0)?
Any help is appreciated.
Click here to see answer by solver91311(24713)

Question 194060: How to find the slope (or rate of change) between the the two points with coordinates (1997, 1.26) and (2006, 2.31)
Click here to see answer by stanbon(75887)

Question 194148: Graph x - 3y > 2
When I work it I get y< 1/3x - 2/3
the pairs work out to (-3,-5/3),(0,-2/3), and (3,1/3).
When I check with (0,0) the result is false which makes the fill opposite of the graphed line. I don't believe this answer but I can't find any errors.
Click here to see answer by vleith(2983)

Question 194233: 2x+y=4

Click here to see answer by vleith(2983)

Question 194233: 2x+y=4

Click here to see answer by stanbon(75887)

Question 194240: find incerpts for the graph of the equation -3x+y=6
Click here to see answer by jojo14344(1513)

Question 194276: Write an equation of the circle with radius 7 and center (2,-5)
This seemed so easy in class.
Click here to see answer by Alan3354(69443)

Question 194278: Graph each conic section.
(x^2/4)-(y^2/9)=1
Click here to see answer by Alan3354(69443)

Question 194275: Find the length of the segment that joins P(-1,3) and Q(-2,6) and then find the midpoint.
Click here to see answer by checkley77(12844)

Question 194483: Graph the equation and identify the y-intercept

y+x = -2

The y-intercept is ___
(type an ordered pair)
Click here to see answer by jim_thompson5910(35256)

Question 194499: Please help me solve I'm having trouble with graphing y=-2/3x-12 I know how to point them on the graph but I'm having trouble solving the equation to determine if the point's (-4, 10) are correct. no text book
Click here to see answer by jim_thompson5910(35256)

Question 194524: Graph the following system of equations. Describe both lines and the final graph.
x+y>=3
x-4y>-4
Click here to see answer by stanbon(75887)

Question 194546: solve 5x+4y=12 for y
So far this is what I think:
5x+4y=12
4y=12-5x
y=12/4-5/4x
y=3-5/4x
Click here to see answer by Alan3354(69443)

Question 194545: solve 5x+4y=12 for y
So far this is what I think:
5x+4y=12
4y=12-5x
y=12/4-5/4x
y=3-5/4x
Click here to see answer by stanbon(75887)

Question 194577: draw a graph of the equation with intercepts (0,-2) and (1,0) to determine wich other point the line passes through.
Click here to see answer by jojo14344(1513)

Question 194649: Plot the graphs of the following functions. Scan the graphs and post them to the Facilitator along with your response.
f(x) = 4x+2

Click here to see answer by Mathtut(3670)

Question 194437: Help please I have been working on these 3 problems for days and I still can not get it.I am losing my mind at this point.PLEASE HELP
Graph the parabola
1)y=(x-5)^2+4
2)y=4/3*^2 + 8x +12
3)Find the x-intercept and the coordinates of the vertex for the parabola y=x^2-6x-7.If there is more than one x intercept separate ith commas
x-intercept:
vertex:
Click here to see answer by stanbon(75887)

Question 194683: Sketch one cycle of the graph y = 2sin[1/2 x +π/4]

Click here to see answer by Alan3354(69443)

Question 194770: Graph parabola. Identify vertex, intercepts and maximum or minimum y value
f(x)=16-x^2

Click here to see answer by mersha(9)

Question 194790: 7. Sketch graph of each function and state the domain and range
y= (x)-4

Click here to see answer by mersha(9)

Question 194806: What is the 14th term in an arithmetic sequence in which the first term is 100 and the common difference is -4 ?
Click here to see answer by stanbon(75887)

Question 194841: Please could you explain what it means reflect the graph in the y-axis
Click here to see answer by Mathtut(3670)

Question 194848: I have 10 problems and I have four possible answers to all of them but I am not sure which one it might be. The answer choices would be labeled A, B, C, and D. I would really appreciate it if I can get it really soon. thankyou you guys soooooooo much! :)

Solve by using the perfect squares method.
x2 + 4x + 4 = 0
(Points: 4)
A. 2
B. -2
C. 4
D. - 4

2. Solve.
x2 + 5x 6 = 0
(Points: 4)
A. {2, 3}
B. {-2, -3}
C. {-1, 6}
D. {1, -6}

3. What value should be added to the expression to create a perfect square?
x2 20x
(Points: 4)
A. - 25
B. 25
C. 100
D. -100

4. Solve.
x2 + 8x 8 = 0
(Points: 4)
Option A: -4 +/- 2 & square root of 12
Option B: -4 +/- 2 & square root of 6
Option C: -4 +/- & square root of 6
Option D: 4 +/- & square root of 12

5. Solve: 6x2 + 12x = 0
(Points: 4)
{-6, -2}
{0, �}
{0, 2}
{0, -2}

6. Solve each problem by using the quadratic formula. Write solutions in simplest radical form.
2x2 - 2x -1 = 0
(Points: 4)

I have no option ABC or D, I just need the answer. :)

7. Calculate the discriminant.
x2 - x + 2 = 0
(Points: 4)
9
A.
7
B.
- 7
C.
- 9
D.

8. Calculate the discriminant and use it to determine how many real-number roots the equation has.
3x2 - 6x + 1 = 0
(Points: 4)
A. three real-number roots
B. two real-number roots
C. one real-number root
D. no real-number roots

9. Without drawing the graph of the equation, determine how many points the parabola has in common with the x-axis and whether its vertex lies above, on, or below the x-axis.
y = 2x2 + x + 3
(Points: 4)
A. 1 point in common; vertex on x-axis
B. 2 points in common; vertex below x-axis
C. 2 points in common; vertex above x-axis

D. no points in common; vertex below x-axis

10. Without drawing the graph of the equation, determine how many points the parabola has in common with the x-axis and whether its vertex lies above, on, or below the x-axis.
y = 3x2 - 12x + 12
(Points: 4)
A. 1 point in common; vertex on x-axis
B. 2 points in common; vertex below x-axis
C. 2 points in common; vertex above x-axis
D. no points in common; vertex above x-axis
Click here to see answer by solver91311(24713)

Question 195153: I need help to answer this math problem.
-4(5x+8)-2x
Thank you so very much
Click here to see answer by Alan3354(69443)

Question 195239: What is the y-intercept of 4x+8y=12?
Click here to see answer by orca(409)

Question 195330: How do you determine the slope and y-intercept of this?
x=-2
Click here to see answer by Mathtut(3670)

Question 195330: How do you determine the slope and y-intercept of this?
x=-2
Click here to see answer by doukungfoo(195)

Question 195401: Please i need help graphing this!

12x-3y=24

thank you!
Click here to see answer by jim_thompson5910(35256)

Question 195473: I need help writing an inequality for this problem. I have x amount of dollars to spend on a landscaping project. I want to spend more than 6,000 but less than 10,000. How would I write an inequality to show all of this?
Click here to see answer by jim_thompson5910(35256)

Question 195481: Sketch one cycle of the graph y = 2sin[1/2x +π/4]
Click here to see answer by Alan3354(69443)

Question 195524: plot the graphs of the following functions.
1. f(x) = 5^x
2. f(x) = 4^x+2
3. f(x) = (1/3)^x
4. f(x) = log5x
Click here to see answer by Alan3354(69443)

Question 195588: algebra 2
write an equation for the line with the given info.
pts (3,5) (5,12)
I know that you have to use slope intercept for y=mx+b but i dont know how to find the slope. I think you have to make a graph but Im not sure.
Click here to see answer by jim_thompson5910(35256)

Question 195609: y=3x+2

Click here to see answer by jim_thompson5910(35256)

Question 195595: Write an equation in point-slope form of the line containing the point (-4,-5) and parallel to the line 2x+y=-3.
Click here to see answer by checkley77(12844)

Question 195766: One last problem I'm having trouble with requires that I dtermine the co-ordinates of the lowest (minimum point on the curve)
y(x) = -8x - 7 - x^2.
I also need to prove the point is minimum.
Any help please.
Thanks, -nick
Click here to see answer by stanbon(75887)

Question 195836: Graph the inequalities, shade the area that represents the solution to each inequality. Use Microsoft excel graphing tools.
1. y≥5x+2
2. y< -3x+1
3. 2x-6y ≤18
Graph the systems of inequalities, shade only the area that represents the solution to each system. Use Microsoft excel graphing tools.
4.y≤3x+4
y≥x+2

Click here to see answer by vleith(2983)

Question 195950: Solve:
(20b^3+17b^2+18b+42)/(4b+5)
Click here to see answer by jim_thompson5910(35256)

Question 196068: Which of the following is the sketch of the inequality 4x2 + 9y2 < 36
Click here to see answer by Alan3354(69443)

Question 196112: Hello.
I'm having a hard time getting this answer correct on homework
Solve the equation for a.
(a + 4)/b = (a - 4)/b + (b + 4)/a
a =
thanks!
Click here to see answer by stanbon(75887)

Question 196127: The vertex and the axis of symmetry of the graph of y=x^2+5 are
Click here to see answer by josmiceli(19441)

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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 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