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

Tutors Answer Your Questions about Graphs (FREE)

Question 1105519: Which of the following equations describes the line shown below? Check all that apply. (-4, 10) (-7, -5)
A. y - 5 = 5(x - 7)
B. y + 5 = 5(x + 7)
C. y + 10 = (x - 4)
D. y - 10 = 5(x + 4)
E. y - 10 = (x + 4)
F. y + 10 = 5(x - 4)
Click here to see answer by math_helper(2461)

Question 1105548: Check that the graph of x^2 - y^2 = 1 is symmetric about the y-axis.
Click here to see answer by Alan3354(69443)

Question 1105609: Find the center and the radius of the circle below . Show your work
X^2+6x+y^2-4y-68=0
Click here to see answer by rothauserc(4718)

Question 1105854: Sketch the graph of the polynomial function P(x) = x^5 + x^4 - 9x^3 - 13x^2 + 8x + 12. Determine the behavior of the graph its zeros and y - intercept
Click here to see answer by josgarithmetic(39617)

Question 1105888: Can you help me please?
Graph x=3(y-1)+6
so far I have
x=3(y-1)+6
X= 3y - 3 + 6
X= 3y + 3
how do I get the y intercept so I can graph this?

Click here to see answer by Alan3354(69443)

Question 1105993: I can�t figure out how to solve and graph the inequality y>-1/3x+2
Click here to see answer by josgarithmetic(39617)

Question 1106002: What is the vertex of this equation? y=x^2-6x+4
Click here to see answer by stanbon(75887)

Question 1106072: Find the x-intercept and y-intercept of the line −2𝑥 − 𝑦 = 10
Click here to see answer by Boreal(15235)

Question 1106146: Please show me how to graph inequalities on a graph:
y>-3
t>6
r <- -4
Click here to see answer by Edwin McCravy(20055)

Question 1106230: Find the maximum product of two numbers whose sum is 60. Is there a minimum product? Explain.

Click here to see answer by Fombitz(32388)

Question 1106226: {8x+6y=482x−3y=−6
Which statements are true about the solution to the system of equations?
The x-coordinate of the solution is 3.
The ordered pair that is the solution to the system lies in Quadrant I .
The y-coordinate of the solution is 4.
The y-coordinate of the solution is 3.
The ordered pair that is the solution to the system lies in Quadrant II .
The x-coordinate of the solution is −3 .
Click here to see answer by Boreal(15235)

Question 1106323: A board is leaning against a building so that the top of the board reaches a height of 18 feet. The bottom of the board is on the ground 4 feet away from the wall. What is the slope of the board as a positive number?
Click here to see answer by ikleyn(52780)

Question 1106328: x = -3 This is the problem
To solve this problem, you will be required to do some work that will not be included in the discussion point.
�First, graph your functions so that you can clearly describe the graphs in your post. Your graph itself is not required in your post, although a discussion of the graph is required. Make sure you have at least five points for each equation to graph. Show all math work for finding the points.
�Mention any key points on the graphs, including intercepts, vertex, or start/end points. Points with decimal values need not be listed, as they might be found in a square root function. Stick to integer value points.
�Discuss the general shape and location of each of your graphs.
�State the domain and range for each of your equations. Write them in interval notation.
�State whether each of the equations is a function or not giving your reasons for the answer.
�Select one of your graphs and assume it has been shifted three units upward and four units to the left. Discuss how this transformation affects the equation by rewriting the equation to incorporate those numbers.
�Incorporate the following five math vocabulary words into your discussion. Use bold font to emphasize the words in your writing. Do not write definitions for the words; use them appropriately in sentences describing the thought behind your math work.
◦Function
◦Relation
◦Vertical Line test
◦Transformation

Click here to see answer by ikleyn(52780)

Question 1106575: -2x+y=6
y=-1/3x-1

Click here to see answer by Alan3354(69443)

Question 1106599: If a graph has two lines that form a v shape, is it linear? Why? Or why not?
Click here to see answer by ikleyn(52780)

Question 1106587: Draw the graph of the relation defined by:
y^2 = 4x
Steps: first choose the vertex of the equation
Select one point above the axis of symmetry and one point below the axis of symmetry
Click here to see answer by josgarithmetic(39617)

Question 1106659: How would you graph x < -1 and shading the region that is less than
Click here to see answer by Alan3354(69443)

Question 1106685: Find the formula for an exponential function that passes through the two points given.
(x, y) = (0, 5)
and
(x, y) = (3, 40)
Click here to see answer by greenestamps(13200)

Question 1106731: I am attempting to help my daughter with her algebra homework. It has been years since I have done algebra. I am having a problem with what I believe is a linear equation we have to graph.
3y=2x-2

I also have problems that Id like to see if I have gotten correct
x-2y=15 I have if x=0 then y=7.5
5y=-2x-49 I have (0,9.8) and (-3, -8.6)
y=-5x-19 I have (0,19) and (2,-9)
4y=x-13 I have (0,-3.25) and (-2, -3.75)
Can you help with the first one and identify any I have wrong so I can re work them. Thank you
Click here to see answer by Alan3354(69443)

Question 1106741: What is the slope between the following two points: (2,5) (-4,-6)
Click here to see answer by Alan3354(69443)

Question 1106865: Write an inequality for 2 more than 4 times a number is at least 30.
Click here to see answer by ikleyn(52780)

Question 1106880: how do i solve this by substitution: 5x+2y=9
y=-x-3 and how do i solve it bye graphing
Click here to see answer by josgarithmetic(39617)

Question 1106880: how do i solve this by substitution: 5x+2y=9
y=-x-3 and how do i solve it bye graphing
Click here to see answer by stanbon(75887)

Question 1106867: Keith has $500 in a savings account at the beginning of the summer. He wants to have at least $200 in the account by the end of the summer. He withdraws $25 each week for food, clothes, and movie tickets.
Write an inequality that represents Keith�s situation.
How many weeks can Keith withdraw money from his account?

Click here to see answer by Theo(13342)

Question 1106906: how do you graph y=3?
Click here to see answer by addingup(3677)

Question 1106906: how do you graph y=3?
Click here to see answer by greenestamps(13200)

Question 1106888: two functions are defined as follows
f(x)={6-x for 0 { x-6 for x>6
g(x)=1/2x
draw the graphs of the functions f and g in the interval 0 Mark the intersecction points A and B of f(x) ang g(x) on the graph
write down the coordinates of A and B
Calculate the midpoint M of the line AB
Find the equation of the strtaight line which joins the points M and N
Click here to see answer by greenestamps(13200)

Question 1106927: The sum of a number and 7 is no more than 35
Click here to see answer by ikleyn(52780)

Question 1106944: Hello
Could someone help me?
Using the graph in the link write the radical function for f(x)
https://answers.yahoo.com/question/index?qid=20180119184428AAt0TCQ
Thank you.
Click here to see answer by Boreal(15235)

Question 1106948: solve : floor(x) -x =-0.2
find value of a if i^(a!)=I^84 :i^2=-1

Click here to see answer by ankor@dixie-net.com(22740)

Question 1106948: solve : floor(x) -x =-0.2
find value of a if i^(a!)=I^84 :i^2=-1

Click here to see answer by ikleyn(52780)

Question 1106949: solve the equation: 2x^2 -3(floor(x)) ^2) -3=0
Click here to see answer by ikleyn(52780)

Question 1107164: what is x in
4y + 3x = -3
y = 5x -5
Click here to see answer by Fombitz(32388)

Question 1107297: The lines y=2x+4 and x+y=13 make angles of a^o and b^o with the positive direction of the x-axis, as shown in the diagram.
(a)find the values of and b
(b)hence find he acute angle between the two lines

Click here to see answer by Boreal(15235)

Question 1107338: How do I graph y= -8x +4 on a rectangular coordinate system.
Thanks
Click here to see answer by josgarithmetic(39617)

Question 1107360: 6|7+7n|+8<50
Click here to see answer by ikleyn(52780)

Question 1107539: Find a so that the two lines given are parallel: 5x+2y=6 and 3x-ay=4.
Click here to see answer by josgarithmetic(39617)

Question 1107538: Find b so that the two lines given are parallel: 3x+y=1 and bx-y=3.
Click here to see answer by Boreal(15235)

Question 1107544: 3x+2y greater than less than 2, x+2y greater than less than 2
Click here to see answer by stanbon(75887)

Question 1107577: Consider the following function.
f (x) = (1/sqrt{4π})*e^(−x^2/18)
(note that 4π is under the square root in the denominator)
Find the largest interval(s) on which f is concave up.
Click here to see answer by greenestamps(13200)

Question 1107604: the sum of two numbers is 21 and their difference is 5 what are the two numbers

Click here to see answer by Alan3354(69443)

Question 1107614: If the slope of a line that passes through (3,4) and (10,-b) is -11, what is b?
Click here to see answer by Boreal(15235)

Question 1107584: 2. Let P = 0.09q + 50 be the supply equation for a manufacturer. The demand equation for his product is:
P = 0.07q + 65
i. If a tax of N1.50/unit is to be imposed on the manufacturer, how will the original equilibrium price be affected if the demand remains the same?
ii. Determine the total revenue obtained by the manufacturer at the equilibrium point, both before and after the tax.

Click here to see answer by Boreal(15235)

Question 1107641: hello, I need to write the equation : y=1/2x+2/5 in general form
Click here to see answer by josmiceli(19441)

Question 1107624: Robert needs to cut four shelves from a board that is 2.5 meters long. The second shelf is 18 centimeters longer than twice the length of the first shelf. The third shelf is 12 centimeters shorter than the first shelf. The remaining shelf is 4 centimeters longer than the first shelf. If Robert must use the entire 2.5 meter board for the shelves, what is the length of the second shelf, in centimeters?
Click here to see answer by Theo(13342)

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