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

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Question 979882: Find an equation for the line with the given properties. Express the answer using the slope-intercept form of the equation of a line.
horizontal; containing the point (-7, -2)

thanks for helping
Click here to see answer by josmiceli(19441) About Me 
Question 979880: Translate the sentence into a mathematical equation. Be sure to identify the meaning of all symbols.
The volume of a right prism is the area of the base times the height of the prism.
a. If V represents the volume, B the area of the base, and h the height, then V=B+h
b. If V represents the volume, B the area of the base, and h the height, then V=Bh
c. If V represents the volume, B the area of the base, and h the height, then V=1/2Bh
d. If V represents the volume, B the area of the base, and h the height, then V=B/h

I can not wrap my brain around it. (((
please help
Click here to see answer by jim_thompson5910(35256) About Me 
Question 979952: How do I graph the relation and state its domain and range for the following:
x=(y+2)^2 ? Can you provide step by step guidance to assist in completing my remaining homework? Thank you.
Click here to see answer by josgarithmetic(39617) About Me 
Question 980037: Without solving, determine the character of the solutions of the equation in the complex number system.
x2 + 5x + 8 = 0
a. a repeated real solution
b. two unequal real solutions
c. two complex solutions that are conjugates of each other
I picked b. Please advise if I am correct or no.
Thank you
Click here to see answer by ikleyn(52781) About Me 
Question 980036: If (9, -2) is the endpoint of a line segment, and (6, 2) is its midpoint, find the other endpoint.
a. (3, 6)
b. (17, -8)
c. (3, -6)
d. (15, -10)
I spend an hour trying ti figure it out ( please help
thanks
Michael
Click here to see answer by Cromlix(4381) About Me 
Question 980038: Find an equation of the line containing the centers of the two circles:
x² + y² - 10x - 10y + 49 = 0 and x² + y² - 4x - 6y + 9 = 0.

a. -2x - 3y + 5 = 0

b. 2x + 3y + 5 = 0

c. 8x - 7y + 5 = 0

d. 2x - 3y + 5 = 0
Click here to see answer by Cromlix(4381) About Me 
Question 980038: Find an equation of the line containing the centers of the two circles:
x² + y² - 10x - 10y + 49 = 0 and x² + y² - 4x - 6y + 9 = 0.

a. -2x - 3y + 5 = 0

b. 2x + 3y + 5 = 0

c. 8x - 7y + 5 = 0

d. 2x - 3y + 5 = 0
Click here to see answer by MathLover1(20849) About Me 
Question 980038: Find an equation of the line containing the centers of the two circles:
x² + y² - 10x - 10y + 49 = 0 and x² + y² - 4x - 6y + 9 = 0.

a. -2x - 3y + 5 = 0

b. 2x + 3y + 5 = 0

c. 8x - 7y + 5 = 0

d. 2x - 3y + 5 = 0
Click here to see answer by Edwin McCravy(20055) About Me 
Question 980039: Find all the points having an x-coordinate of 9 whose distance from the point (3, -2) is 10.
a. (9, 6), (9, -10)
b. (9, 13), (9, -7)
c. (9, -12), (9, 8)
d. (9, 2), (9, -4)
Please help. Thank you for your time
Click here to see answer by Cromlix(4381) About Me 
Question 980040: Write the expression in the standard form a + bi.
If w = 9 + 4i, evaluate w - %280%29%2F%28w%29
it is a "blank" divided by w at the end not a zero

a. 0
b. 18
c. -18 + 8i
d. 8i
Click here to see answer by Alan3354(69443) About Me 
Question 980200: Good day
Determine the gradient of the tangents at the given points.
f(x) = x² - x - 6 ....where y = -4
The answer is +-3
I just don't know how to get there
Click here to see answer by Cromlix(4381) About Me 
Question 980208: good day
sorry could not find Calculus in the list. It's differentiation.
Calculate the turning points
3x³ - 6x² -9 = 0
The answers are (0:9) and (4/3:-12.55)

Click here to see answer by Cromlix(4381) About Me 
Question 980208: good day
sorry could not find Calculus in the list. It's differentiation.
Calculate the turning points
3x³ - 6x² -9 = 0
The answers are (0:9) and (4/3:-12.55)

Click here to see answer by ikleyn(52781) About Me 
Question 980208: good day
sorry could not find Calculus in the list. It's differentiation.
Calculate the turning points
3x³ - 6x² -9 = 0
The answers are (0:9) and (4/3:-12.55)

Click here to see answer by rothauserc(4718) About Me 
Question 980202: good day
sorry could not find Calculus in the list. It's differentiation.
Make use of the symbol Dx and differentiate with respect to x
3xł - 27
--------- (devided by)
x-3

The answer is 2x + 3
I just don't know how to get there
Click here to see answer by Edwin McCravy(20055) About Me 
Question 980202: good day
sorry could not find Calculus in the list. It's differentiation.
Make use of the symbol Dx and differentiate with respect to x
3xł - 27
--------- (devided by)
x-3

The answer is 2x + 3
I just don't know how to get there
Click here to see answer by AnlytcPhil(1806) About Me 
Question 980288: In 1995, 500 runners entered a marathon. In 1998, 20500 runners entered the race. Because of the limited number of facilities, the carrying capacity of the number of racers is 58500. The number of racers at any time, t, in years, can be modeled by the logistic function of p(t)=c/1+Be^kt
1. what is the value of c?
2. what is the value of b?
3. what is the value of k?
i know how to find the value of c and b but i need help on finding the value of K please, any help would be appreciated.
Click here to see answer by jim_thompson5910(35256) About Me 
Question 980289: the population of a midwest town decreased from 214,000 to 211,000 in just 2 years. assuming this trend continues, what will population be after an additional 3 years?
thank you for your time and help
Click here to see answer by Boreal(15235) About Me 
Question 980620: Solve the system of equations and enter as order pairs. Y=-x+5
Y=x-3
Click here to see answer by Alan3354(69443) About Me 
Question 980620: Solve the system of equations and enter as order pairs. Y=-x+5
Y=x-3
Click here to see answer by stanbon(75887) About Me 
Question 980620: Solve the system of equations and enter as order pairs. Y=-x+5
Y=x-3
Click here to see answer by josh_jordan(263) About Me 
Question 980624: I need to find the slope and y-intercept of an equation. 4X+9Y=43
Click here to see answer by josgarithmetic(39617) About Me 
Question 980646: The population of a Midwest industrial town decreased from 211,000 to 207,000 in just 2 years. Assuming that this trend continues, what will the population be after an additional 5 years? the population will be about_______? (Do not round until the final answer. Then round to the nearest whole number needed.)
Click here to see answer by josgarithmetic(39617) About Me 
Question 980656: Please show how to Graph x<2y x+y<0
having some trouble here I think I got the answer but I really need to double check.
Click here to see answer by macston(5194) About Me 
Question 980875: solve the equation x-y=-1
x+y=9
Click here to see answer by Fombitz(32388) About Me 
Question 980930: Write the equation of the line with the given conditions
Passing through (1,-6) and perpendicular to the line with equation -2x+3y=-16
A) y=-3/2x+9/2
B) y=-2/3x-2/3
C) y=-1/3x+16/3
D) y=3/2x+9/2
Click here to see answer by josgarithmetic(39617) About Me 
Question 980930: Write the equation of the line with the given conditions
Passing through (1,-6) and perpendicular to the line with equation -2x+3y=-16
A) y=-3/2x+9/2
B) y=-2/3x-2/3
C) y=-1/3x+16/3
D) y=3/2x+9/2
Click here to see answer by MathTherapy(10552) About Me 
Question 980930: Write the equation of the line with the given conditions
Passing through (1,-6) and perpendicular to the line with equation -2x+3y=-16
A) y=-3/2x+9/2
B) y=-2/3x-2/3
C) y=-1/3x+16/3
D) y=3/2x+9/2
Click here to see answer by solver91311(24713) About Me 
Question 981062: How do I graph y > -x?
Click here to see answer by Fombitz(32388) About Me 
Question 981110: Graphf(x)= |x+2|
Click here to see answer by josmiceli(19441) About Me 
Question 981122: graph f(x)= x(x-2)(x+3)
d = -5 < x <4
Find:
1. degree
2. zeros
3. x - intercept
4. y - intercept
5. turning point
Click here to see answer by josgarithmetic(39617) About Me 
Question 981172: Solve the inequality
x^2-4+(3/x)< 0
What I have tried:
(x^3-4x+3)/x < 0
I do not know how to proceed after this.
Thank you in advance
Click here to see answer by josgarithmetic(39617) About Me 
Question 981432: graph the parabola y=-x^2 -4x+1
Click here to see answer by Fombitz(32388) About Me 
Question 981430: graph y=3x^2 -12x-3. Then state the vertex.
Please help me with this.
Click here to see answer by josgarithmetic(39617) About Me 
Question 981430: graph y=3x^2 -12x-3. Then state the vertex.
Please help me with this.
Click here to see answer by macston(5194) About Me 
Question 981767: Consider the graph of the cosine function shown below.
y= 4cos(2x)
a. Find the period and amplitude of the cosine function.
b. At what values of for do the maximum value(s), minimum values(s), and zeros occur?
Click here to see answer by Fombitz(32388) About Me 
Question 981834: y<3/2x-3 graph it
Click here to see answer by macston(5194) About Me 
Question 981894: Graph the parabula y=-x%5E2-4x%2B1
Please explain how to do this also please.
Click here to see answer by Alan3354(69443) About Me 
Question 982113: graph standard coordinate (x,y) plane, of y= (2x^2 + x)/x explain answer
Click here to see answer by macston(5194) About Me 
Question 982159: Describe the graph of the function f(x) = x3 − 11x2 + 36x − 36. Include the y-intercept, x-intercepts, and the end behavior.
Click here to see answer by josgarithmetic(39617) About Me 
Question 982189: The graph of f(x) passes through the point (5,1). Through which point does the graph of -f(x+3)-2 pass?
A) (-2,-1)
B) (2,-3)
C) (2,1)
D) (8,-3)
Click here to see answer by josgarithmetic(39617) About Me 
Question 982261: Graph the equtation y-2=0. Thank you!
Click here to see answer by rothauserc(4718) About Me 
Question 982224: Y=1\3x+3
Click here to see answer by Alan3354(69443) About Me 
Question 982397: Graph the linear inequality x < 5. Please show work. Thank you very much.
Click here to see answer by stanbon(75887) About Me 
Question 982435: Solve using substitution.
4x + 5y = 16
y = -4
Click here to see answer by rfer(16322) About Me 
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