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

Tutors Answer Your Questions about Graphs (FREE)

Question 441662: what are the roots of y=3x^2
Click here to see answer by robertb(4012)

Question 441784: line that passes through the point (1,-3) and is parallel to the line 7x + y = -5.

Click here to see answer by sudheerb(5)

Question 441817: find the slope of a line passing through (3,2)and (-1,-2)
Click here to see answer by MathLover1(6632)

Question 442009: Hello! I need some help trying to solve parts a and b. I've already used the quadratic formula to find the two zeros (.5 and 2) but I am having trouble moving forward. Thank you so much!!
An espresso stand finds that its weekly profit is a function of the price, x, it charges per cup. If x is in dollars, the weekly profit is P(x) = -2900x^2 + 7250x - 2900 dollars.
a) Approximate the maximum profit and the price per cup that produces that profit.
b) Which function, P(x - 2) or P(x) - 2, gives a function that has the same maximum profit? What price per cup produces that maximum profit?
Click here to see answer by stanbon(57342)

Question 442108: Write an equation in standard form for a line passing through the pair of points.
(-4, 5) and (0, -2)

I think the answer might be... 9x - 2y = -4
But, Im really not sure.
Any help is greatly appreciated!! Thank you in advance!
Click here to see answer by josmiceli(9676)

Question 442171: Which of the following is NOT a point on the line -6x+5y=13
A (1,19/15)
B (-1/2, 2)
C (-1/3) (11/5)
D (6,-5)
Click here to see answer by MathLover1(6632)

Question 442188: 4.If 3 workers can paint a room in 2 hours, then approximately how long does it take 4 workers to paint the same room? Assume the time needed to paint the room is inversely proportional to the number of workers.
A. 1 hour
B. 3 hours
C. 1.5 hours
D. 2 hours

Click here to see answer by jorel1380(2518)

Question 442249: graph x^2+5x+1
Click here to see answer by swincher4391(726)

Question 442454: How do you graph
y is greater than x AND
y is less than -x
I have the answer, but I don't get it.
Click here to see answer by Gogonati(809)

Question 442577: Write an equation of the line containing the given point and perpendicular to give line for:
(7,-7);7x+2y=5
Click here to see answer by MathLover1(6632)

Question 442577: Write an equation of the line containing the given point and perpendicular to give line for:
(7,-7);7x+2y=5
Click here to see answer by richard1234(5390)

Question 442560: solve the system by graphing
2x-2y=-2
2x+3y=23
Click here to see answer by mananth(12270)

Question 442192: 2.Which of the following functions is most likely to have the smallest value for y if x is large? (Assume k is positive.)
A. a direct variation function with a small value for k
B. a direct variation function with a large value for k
C. an inverse variation function with a small value for k
D. an inverse variation function with a large value for k

Click here to see answer by robertb(4012)

Question 442728: using the padowan.dk/graph sales=0.15x number of e reader sold -28
value are given in thousands the cost of making an ereader is 150[0.15x1000]with 28000[28*1000] in constant charges and based on the graph and sale equation provided,dicuss the relation between sales and numbers sold consider the slope and y intercept
Click here to see answer by stanbon(57342)

Question 442788: Factor completely, 6x^8-54x^7+30x^6
Click here to see answer by unlockmath(1599)

Question 442788: Factor completely, 6x^8-54x^7+30x^6
Click here to see answer by nerdybill(6958)

Question 442775: Graph the function
f(x)= -2x^2 + 4x + 3
Click here to see answer by ewatrrr(10682)

Question 442772: Graph the function
f(x)= -(x-1)^2
Click here to see answer by ewatrrr(10682)

Question 442832: 2x+18>23
Click here to see answer by kittycat1613(12)

Question 442990: I can not figure this one out.... -y= 4X-5 What is the slope of this line?
Click here to see answer by Alan3354(30993)

Question 443042: let h(x)=x^2-x Find h(-1)
Click here to see answer by shree840(260)

Question 443040: Determine an equation for the vertical line passing through the point (5,2)
Click here to see answer by shree840(260)

Question 443043: let f(x)=2x^2-x-2, g(x)=x+2 Find g(-1)-f(-1)
Click here to see answer by swincher4391(726)

Question 443044: let f(x)=2x^2-x-2, g(x)=x+2 Find f[g(2)]
Click here to see answer by stanbon(57342)

Question 443061: Graph the equations on separate graphs by completing the tables and plotting
the points. You may use Excel or another web-based graphing utility.
Complete the table using the given values of x and the equation y = -2x + 7.
Click here to see answer by swincher4391(726)

Question 443083: Solve the system by the graphing method
x+y=4
y=x+2
Click here to see answer by swincher4391(726)

Question 443074: Determin whether the graphs of the two lines are parallel.
y+3=9x
6x-y=-3
Are the graphs of the given equations parallel?
No or Yes
Click here to see answer by mananth(12270)

Question 443093: Find the eqaution of the parabola given the three points: (0,1),(2,1),(-1,4)
Click here to see answer by swincher4391(726)

Question 443092: Find the eqaution of the parabola given the three points: (1,0),(0,-4),(2,6)

Click here to see answer by swincher4391(726)

Question 443106: what equation would i use to correctly describe a y-intercep of (0,6)
Click here to see answer by swincher4391(726)

Question 443162: I am frying my brain trying to solve this algebra questions. Most having to do with graphs. Can anyone help me with this?
Question 1: Solve, then graph:
a + 2 <-13 (the "<" should be underlined).
Thank you!
Click here to see answer by MathLover1(6632)

Question 443193: Given f(x)= -3x+2 and g(x)= -2x+9
find (gof)(x)
Can anyone help me with this problem? TY in advance.
Click here to see answer by swincher4391(726)

Question 443387: I am having trouble with this equation: m^2 - 1 / (m + 1)^2. Can someone please help me with this equation?
Click here to see answer by stanbon(57342)

Question 443408: Please help solve this simultaneous equations
x^2 = 4 - y
x = y + 2

thanks
AA
Click here to see answer by swincher4391(726)

Question 443468: Find the x intercept and y intercepts, slope and graph:3x-4y=12
Click here to see answer by rfer(12657)

Question 443491: Solve, x=_______: -x^2-3x+4=0
Click here to see answer by josmiceli(9676)

Question 443693: solve and graph. -3x-9y=18
Click here to see answer by oberobic(2304)

Question 443707: Graph each inequality, and write the solution set using both set-builder notation and interval notation for problem: y<6
Click here to see answer by MathLover1(6632)

Question 443727: How to coordinates 6,1
on the gragh
Click here to see answer by ewatrrr(10682)

Question 443744: Hello. I need a little bit of help...or shall I say, a lot of help with this Algebra problem:
An equation and two ordered pairs are given. Show that each pair is a solution of the equation. Then graph the two pairs to determine another solution. Answers may vary.
2y + x = 5; (−1, 3), (7, −1)
Thank you!

Click here to see answer by ewatrrr(10682)

Question 443745: find the vertex, the line of symmetry, the maximum or minimum value of the quatratic function, and graph the functio f(x)=+-2x^2+2x+8
Find the x-coordinate of the vertex is___
Find the y-coordinate of the vertex is__
The equation of the line of symmetry is x=____
The maximum/minimum of f(x)is ___
The value , f(1/2)=17/2 is?
Click here to see answer by ewatrrr(10682)

Question 443754: solve for x. x^2+13=6x
Click here to see answer by swincher4391(726)

Question 442922: y=(x^3-x)/2
I need to find the intercepts, I know it intercepts the y axis at (0,0) but want to know how to find the x intercepts,I am having trouble when plugging 0 in for y. I am thinking they will be square roots. Please help

I was also asked to test this equation for symmetry and determined that it is symmetric with respect to the origin.
Click here to see answer by ewatrrr(10682)

Question 443709: the number of tickets sold each day for an upcoming performance of handel's Messiah is given by N(x)=-0.3x^2+6.6x+14, where x is the number of days since the concert was first announced. When will daily ticket sales peak and how many tickets will be sold that day?
Ticket sales will peak__days after the concert was first announced.
The number of tickets soldon the day will be ___
Click here to see answer by ewatrrr(10682)

Question 443774: find the vertex, the line of symmetry, the maximum or minimum value of the quadratic function, and graph the function f(x)=2x^2-16x+37
choose correct line of symmetry?
a. y=-5
b. x=-4
c. y=5
d. x=4
the maximum/minimum of f(x) is?
Is the value, f(4)=5 minimum or a maximum?
Click here to see answer by solver91311(16885)

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