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

Tutors Answer Your Questions about Graphs (FREE)

Question 946846: If f(x) = 4x + 12 is graphed on a coordinate plane, what is the y-intercept of the graph?
Click here to see answer by Fombitz(32388)

Question 946883: A farmer raises wheat and corn on 430 acres of land. He wants to plant 62 more acres of wheat than corn. How many acres of each should he plant?

A. Write a system of equations for the problem.
B. Solve your system of equations. Make sure to show/explain all of your work for credit.
Click here to see answer by stanbon(75887)

Question 946879: Without graphing, decide whether the system has one solution, no solution, or an infinite number of solutions. Make sure to explain your answer for credit.

x + y = 4
2x + 2y = 8

Click here to see answer by Fombitz(32388)

Question 946876: Without graphing, decide whether the system has one solution, no solution, or an infinite number of solutions. Make sure to explain your answer for credit.

y = 2x
-2x + y = - 5
Click here to see answer by josgarithmetic(39617)

Question 946881: Solve the system using elimination. Make sure to show/explain your work for credit.

2x + y = 4
2x + 3y = 0
Click here to see answer by Alan3354(69443)

Question 946995: So the first line that should be plotted is y=3 and the second line is 4x+y=-5. I'm trying to find the point where they intersect.
Click here to see answer by ankor@dixie-net.com(22740)

Question 947006: what is 12 x - 6 y equals 24 in slope intercept form with work

Click here to see answer by MathLover1(20849)

Question 947007: what is 3 X - 9 y equals negative 18 in slope intercept form with work
Click here to see answer by amarjeeth123(569)

Question 947004: what is negative x plus y equals 15 in slope intercept form with work so I can learn

Click here to see answer by amarjeeth123(569)

Question 947003: what is 5 X - 15 y equals 30 converted to slope intercept form with work so I can learn from it

Click here to see answer by amarjeeth123(569)

Question 947059: Write equations for the vertical and horizontal lines through the point (7,-8)
Click here to see answer by josmiceli(19441)

Question 947023: what is 9 X - 9 y equals 27 in slope intercept form with work
Click here to see answer by Fombitz(32388)

Question 947129: what is the slope of this line through each pair of points (1,-19),(-2,-7)

Click here to see answer by MathLover1(20849)

Question 947052: Please help me solve the system by graphing and CHECK:
{y=x 3+y = -2x}

Click here to see answer by Fombitz(32388)

Question 947140: The graph of which of the following is shaded above the line?

A. x + y < 9
B. y - x < 9
C. x - y < 9
D. x + y < -9
Click here to see answer by Fombitz(32388)

Question 947135: Which of the following is true of the graph y > = -x + 1
A. The line is solid, and the shading is below the line
B. The line is solid, and the shading is above the line
C. The line is dashed, and the shading is above the line
D. The line is dashed, and the shading is below the line
Click here to see answer by Fombitz(32388)

Question 946209: Please help. There are 12 elements in the intersection of sets A and B, and there are 20 elements in the union of sets A and B. If set A has 4 fewer elements than set B, find the number of elements that are in set B, but not set A. Thanks for your help.
Click here to see answer by Fombitz(32388)

Question 946205: Let f(x)= x^2 +x -6 and absolute value x^2 + x -6
a) Draw the graph of f and g and explain how the two graph are related.
b) Draw the graph of f(x)= x^4 - 6x and g(x)= absolute value x^4 - 6x. How are the graphs of f and g related?
c)In general, if g(x)= absolute value f(x), how are the graphs of f and g related? Draw the graphs to illustrate your answer
Click here to see answer by Fombitz(32388)

Question 947257: write the equation of a line whose slope is 2 and whose y-intercept is -3
Click here to see answer by Alan3354(69443)

Question 947397: Is the given ordered pair a solution of the system of inequalities?

(1, 19)

y <= 7x - 13
y> 3x + 6

A. no
B. yes

Click here to see answer by Zucchini(70)

Question 947421: Find the slope-intercept form for the line satisfying the following conditions.
x-intercept 2, y-intercept 4/5 (4 over 5)
The slope-intercept form for the line is ?
Click here to see answer by Fombitz(32388)

Question 947430: Sketch a line with the given slope m and y-intercept b. Write it's slope-intercept form.
m= -1, b= -1
The equation of the line in slope-intercept form is y=?
Click here to see answer by rothauserc(4718)

Question 947455: Determine the solution.
x+y=1
x+2y=0
The solution is __?
(Type an ordered pair)
The dot on the graph is (2,-1)
Click here to see answer by Fombitz(32388)

Question 947396: Which point is a solution of the following system?

y > x
y < 3x - 4

A. I. (1, 2)
B. II. (3, 4)
C. III. (3, 9)
Click here to see answer by MathLover1(20849)

Question 947395: Is the given ordered pair a solution of the system of inequalities?

(4, 10)

A. 9x - y >= 23
B. 5x + 0.2y >= 20
C. no
D. yes

Click here to see answer by MathLover1(20849)

Question 947537: How to determine if each ordered pair is a solution of the given linear equation. x=9;(-2,9), (9,0), (9,4).
Thank you very much for your help.
Click here to see answer by josgarithmetic(39617)

Question 947646: What would 5 characteristics of this sinusoidal graph be?
y = 5 sin [3(x-2)] - 1
This is what I've figured out; but I want to be sure that I am correct.
Midline is at y=1
Amplitude=5
Maximum=1+5=6
Minimum=1-5=(-4)
And the period I have no idea what it is.

Click here to see answer by MathLover1(20849)

Question 947660: How would I go about figuring the graphs of these two functions:
H(x)=4 - |2x-6|
and
G(t)= 1/2(t^2 - 4t)
Please help I need to know where it crosses the x and y axis and why.
Thank you
Click here to see answer by josgarithmetic(39617)

Question 947675: graph the linear function y= -3/4x +4 explain any key points including intercept, vertex. state the domain and range and write it in interval notation and is it a function or not
Click here to see answer by lwsshak3(11628)

Question 947706: Help please

1. Which of the following shows that ΔPQS ≅ ΔRQS, when x = 6?
Graph :http://my.thinkwell.com/questionbank/95001-96000/95595/img/238168.jpg
Options:
A. http://my.thinkwell.com/questionbank/95001-96000/95595/img/242273.gif
B. http://my.thinkwell.com/questionbank/95001-96000/95595/img/242274.gif
C. http://my.thinkwell.com/questionbank/95001-96000/95595/img/242275.gif
D. http://my.thinkwell.com/questionbank/95001-96000/95595/img/242276.gif
2. Which of the following uses the given set of points to prove that ΔABC≅ ΔEFD?
A(0, 0), B(3, 0), C(2, 3),
D(3, 0), E(1, 3), F(4, 3)
Options:
A. http://my.thinkwell.com/questionbank/95001-96000/95614/img/242277.gif
B. http://my.thinkwell.com/questionbank/95001-96000/95614/img/242278.gif
C. http://my.thinkwell.com/questionbank/95001-96000/95614/img/242279.gif
D.http://my.thinkwell.com/questionbank/95001-96000/95614/img/242280.gif
3. Given that PS is the perpendicular bisector of QR, PQ=12.4. and SR=7.6, identify QR.
Graph: http://my.thinkwell.com/questionbank/95001-96000/95629/img/238204.jpg
Options:
QR = 24.8
QR = 15.2
QR = 12.4
QR = 7.6
4. Identify the correct justification for each step, given that m ∠1 = 40� and m∠2 = 40�.
Diagram: http://my.thinkwell.com/questionbank/97001-98000/97606/img/238061.jpg
1. m∠1 = 40�, m∠2 = 40�
2. m∠1 + m∠3 = m∠ABD
3. ∠2 and ∠ABD are supplementary
4. m∠2 + m∠ABD = 180�
5. m∠2 + m∠1 + m∠3 = 180�
6. 40� + 40� + m∠3 = 180�
7. 80� + m∠3 = 180�
Click here to see answer by MathLover1(20849)

Question 947934: Solve the system using elimination.

4x - 5y = 11
6x + 7y = 31
A. (-2, 2)
B. (10, 2)
C. (4, -5)
D. (4, 1)
Click here to see answer by etutorworld(19)

Question 947978: Is the point (-2, -3) a solution of the system?

y = -3x - 3
y = x + 5

A. no
B. yes
Click here to see answer by Fombitz(32388)

Question 947984: Which point is not a solution of y >= -2x + 5

A.(-1, 8)
B. (5, 2)
C. (4, 0)
D. (3, -3
Click here to see answer by Fombitz(32388)

Question 947985: Suppose you spend $500.00 on an oven to bake bread. Each loaf of bread costs you $.20 to bake. You sell the loaves for $1.00 each. How many loaves of bread must you sell to break even?

A. 620 loaves
B. 625 loaves
C. 630 loaves
D. 615 loaves

Click here to see answer by Fombitz(32388)

Question 947709: graph the function y=2|x| state domain, range, function, relation, intercept , vertex,write in interval notation
Click here to see answer by Fombitz(32388)

Question 947988: Use a system of equations to model the situation and then solve by any method.

An orchestra consists of string instruments and wind instruments in a ratio of 9 to 4. There are 91 string and wind instruments in the orchestra. How many string instruments are there? How many wind instruments?

A. 63 string instruments 28 wind instruments
B. 72 string instruments 19 wind instruments
C. 60 string instruments 31 wind instruments
D. 65 string instruments 26 wind instruments
Click here to see answer by MathLover1(20849)

Question 947987: Solve the system using substitution.

y = 4x - 3
y = 5x - 1

A. (9, -4)
B. (5, -1)
C. (4, -3)
D. (-2, -11)

Click here to see answer by MathLover1(20849)

Question 948023: 2x-3y=1 and y=-2x-3 passing through the point (-4,-2)

Click here to see answer by Alan3354(69443)

Question 947983:
Is the point (-2, -1) a solution of the system?

3x - 5y = 6
6x + 2y = -24

A. yes
B. no
Click here to see answer by Alan3354(69443)

Question 948101: how do you graph equations such as y=2x, when it says "graph by constructing a table of values"?
Click here to see answer by Alan3354(69443)

Question 948232: Is (-2,3) a solution of the system? Make sure to state yes or no and show your work to justify your answer.

x + y = 1
x = -2
Click here to see answer by stanbon(75887)

Question 948234: Without graphing, tell whether the system has one solution, no solution, or an infinite number of solutions.

Make sure to explain how you know your answer is correct in order to receive full credit.

y = x + 3
y = -2x + 3
Click here to see answer by stanbon(75887)

Question 948235: Without graphing, tell whether the system has one solution, no solution or an infinite number of solutions.

Make sure to explain how you know your answer is correct in order to receive full credit.

y - 4 = 2x
y - 2x = 4
Click here to see answer by Fombitz(32388)

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