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

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Question 1040848: If you graph the system of inequalities given below, which points would lie in the solution set? Select all the correct answers.
x � y ≥ -4
2x � y ≤ 5
2y + x > 1
Click here to see answer by Fombitz(32388)

Question 1040952: Graph this parabola: y=1/2x^2
Click here to see answer by Fombitz(32388)

Question 1041107: Shade the region for Z if Z=Abar intersect C unite B
A, B, C are three intersecting circles inside the rectangle U.
Click here to see answer by Fombitz(32388)

Question 1041134: graph 2x+5y=-15
Click here to see answer by Alan3354(69443)

Question 1041264: The graph of y=√3x is shown in the xy-plane( http://i.imgur.com/ovtZqsA.jpg ). what is the measure, in radians, of angle POR?
A) π/6
B) π/4
C) π/3
D) π/2
Click here to see answer by rothauserc(4718)

Question 1041288: The sets B and C are defined as follows.
B= {x| x >2}
C= {x| x ≥ 6}
Write B ∪ C and B ∩ C using interval notation.
If the set is empty, write ∅.
Click here to see answer by ikleyn(52778)

Question 1041306: Graph the solution set of the following system of inequalities. y>3x+9 and y<-x-6

Click here to see answer by Fombitz(32388)

Question 1041368:
If f(x) = 4x3 + 7x2 - x + C and f(2) = 1, what is the value of C?
Click here to see answer by Fombitz(32388)

Question 1041371:
f(x) = 2x + 1; g(x) = 5x - 2
Find f/8
Click here to see answer by Fombitz(32388)

Question 1041379:
f(x) = 2x + 1; g(x) = 5x - 2
Find f/g
Click here to see answer by Fombitz(32388)

Question 1041399: Given the function f(x) = -2x + 4x + 3, list the y-intercept, if there is one, of the graph of f
Click here to see answer by stanbon(75887)

Question 1041401: f(x) = -7x squared + 14x + 4, if x = 1, what is f(x)? What point is on the graph of f
Click here to see answer by Alan3354(69443)

Question 1041373:
Given the function f(x) = -7x2 + 14x + 4, if x = 1, what is f(x)? What point is on the graph of f

Click here to see answer by Boreal(15235)

Question 1041443: Find the domain of the function.
g(x) = x/x2-64

Click here to see answer by Boreal(15235)

Question 1041440: Determine whether the function is symmetric with respect to the y-axis, symmetric with respect to the x-axis, symmetric with respect to the origin, or none of these.
y = -6x3 + 7x

Click here to see answer by Boreal(15235)

Question 1041441: The cost C of double-dipped chocolate pretzel O's varies directly with the number of pounds of pretzels purchased, P. If the cost is $5442 when 5.0 pounds are purchased, find a linear function that relates the cost C to the number of pounds of pretzels purchased P. Then find the cost C when 6.0 pounds are purchased.

Click here to see answer by Boreal(15235)

Question 1041445: Find the value for the function.
Find -f(x) when f(x) = 2x2 - 5x + 3

Click here to see answer by solver91311(24713)

Question 1041439: Determine algebraically whether the function is even, odd, or neither.
f(x) = -5x2 + 4

Click here to see answer by solver91311(24713)

Question 1041453: Determine algebraically whether the function is even, odd, or neither.
f(x) = -5x2 + 4

Click here to see answer by solver91311(24713)

Question 1041446: Given the function f(x) = -7x2 + 14x + 4, if x = 1, what is f(x)? What point is on the graph of f

Click here to see answer by josgarithmetic(39617)

Question 1041370:
Given the function f(x) = -2x2 + 4x + 3, list the y-intercept, if there is one, of the graph of f
Click here to see answer by josgarithmetic(39617)

Question 1041444: Find the value for the function.
Find f(x + h) when f(x) = -3x+5/7x+4

Click here to see answer by solver91311(24713)

Question 1041525: Find the equation of the line tangent to the circle x^2+y^2=169 at the point (-5,12).
Click here to see answer by Alan3354(69443)

Question 1041525: Find the equation of the line tangent to the circle x^2+y^2=169 at the point (-5,12).
Click here to see answer by robertb(5830)

Question 1041510: Jasmine and Jesse drive from Abingdon to Boulia at a speed of 90km/h, and then from Boulia to Clarenvale at an average speed of 100km/h. If the total time taken for the journey from Abingdon to Clarenvale was two hours and the average speed for the entire journey was 96km/h, how far is it from Abingdon to Boulia.
I have figured out from the given average speed of the entire journey and time that the entire journey was 196 km in distance, although I may be wrong. How do you work this out.
Click here to see answer by jorel555(1290)

Question 1041932: graph the line y=3/4x-3

Click here to see answer by Fombitz(32388)

Question 1041997: for the function Q(x) sate the behavior of the function at each of the asymptotes. [Oblique Asymptote (x-5), Vertical Asymptote x=-2 & x=-1]
Q(x) = (x^3-2x^2-5x+6)/(x^2+3x+2)
Click here to see answer by josgarithmetic(39617)

Question 1042059: Graph the line.
y = -2x - 2
Click here to see answer by solver91311(24713)

Question 1042224: On a grid sketch two different polynomial functions which are of degree 5 and belong to the same family. write a general equation which describes the family of functions you have sketched.
Click here to see answer by stanbon(75887)

Question 1042244: How do you graph an equation when there isn't a y-intercept? For example: y=1/3x
Click here to see answer by jim_thompson5910(35256)

Question 1042241: I have no idea where to start or what I am doing at all.
The function P(t) = 145e-0.092t models a runner�s pulse, P(t), in beats per minute, t minutes after a race, where 0 ≤ t ≤15. Graph the function using a graphing utility. TRACE along the graph and determine after how many minutes the runner�s pulse will be 70 beats per minute. Round to the nearest tenth of a minute. Verify your observation algebraically.
Click here to see answer by josmiceli(19441)

Question 1042236: Suppose the number of symbols per minute a textbook typesetter can produce is given by
p(t)= 250-120(2.8)^-.5t where t is the number of months a typesetter has been in training.
find p(4) - we keep getting a negative number -36.85 why? it even shows 4,-36.85 on the table on TI 83 Plus
Click here to see answer by josmiceli(19441)

Question 1042317: find the formulas for (fog)(x) if
f(x)={1 if x<0
{2x^2 if 0<=x<=1
{1 if x>1
g(x)={2 if x<0
{3x if 0<=x<=1
{2 if x>1

I know that this is a piecewise function, but I don't know how to compose the individual functions
Click here to see answer by Edwin McCravy(20054)

Question 1042428: 2x + y = 5
Click here to see answer by ikleyn(52778)

Question 1042507: I think this is the correct area for this, being as it has to do with graphs. I need help graphing a circle, but my graphing calculator refuses to let me equal the equation to 15 instead of Y. Could anyone please explain how to graph this: x^2+y^2=15 ? I know it seems very simple, but I'm stuck!
Click here to see answer by ikleyn(52778)

Question 1042561: Find the slope of the line passing through (9, -6) and (5, 10)
Click here to see answer by Alan3354(69443)

Question 1042580: Hello,
I need help with the following math problem:
Let A=(0,1), B=(2,5), C=(5,2), and D=(7,0). A figure is created by connecting to , to , to , and to . The perimeter of can be expressed in the form with and integers. What is the sum of and ?
Thank you,
Nicole
Click here to see answer by ikleyn(52778)

Question 1042625: There is a famous Ferris Wheel and it has a diameter of about 24m and rotates at a rate of 1 revolution every 32 seconds. The ride lasts for 192 seconds. The total height of the structure is 27m, as the wheel is 3 m off the ground.
A) Sketch a graph that would model your height above the ground in relation to time of ride. Assume you board the wheel at its lowest point.
B)If your friends had boarded before you, indicate on the graph where they might be at the start of the ride?
C) What if the Ferris wheel spun backward. How might that change your graph?
Thank you for looking at this, i have been trying to figure this out for days now.
Click here to see answer by josmiceli(19441)

Question 1042659: Find the values of x where the line y = -2x + 20 intersects the parabola y = 2x^2 + 3x - 22

Click here to see answer by Fombitz(32388)

Question 1042655: Please help me solve this equation
1. Solve the following inequality for x:
3x^2 - 8x > 3
2. Without solving the equation 3x^2 - 8x -3 = 0
Show that it has two different rational roots.
Thanks for your help...
Click here to see answer by Edwin McCravy(20054)

Question 1042716: Determine, without graphing, whether the given quadratic function has a maximum value or a minimum value and then find that value.
f(x) = -x� - 2x + 2
a. minimum; - 1
b. maximum; 3
c. minimum; 3
d. maximum; - 1
Click here to see answer by Edwin McCravy(20054)

Question 1042718: A developer wants to enclose a rectangular grassy lot that borders a city street for parking. If the developer has 320 feet of fencing and does not fence the side along the street, what is the largest area that can be enclosed?
a. 25,600 ft2
b. 19,200 ft2
c. 12,800 ft2
d. 6400 ft2
Click here to see answer by ikleyn(52778)

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