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

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Question 434466: ben bowled 135 and 180 in his first two games. what must he bowl in his third game to have an average of at least 170

Click here to see answer by edjones(8007)

Question 434562: What does the graph look like for y= sq rt (x + 8) - 2
I think x would = -8 and y = -2. Not sure.
Click here to see answer by stanbon(75887)

Question 434551: draw a line with a negative slope and positive y- intercept
Click here to see answer by stanbon(75887)

Question 434720: 8 X 10^5 + (3^3)^3 = ?
Click here to see answer by jorel1380(3719)

Question 434836: 1. find a equation of the line containing the given pair of points. (-5, -2) and (-3,-1). The equation of the line in slope-intercept form is y=
2. Find an equation of the line containing the given pair of points.(1/4,-1/2) and (3/4,1). y= . Simply. type answer in y=mx+b using integers or fractions.

3. Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b. (8,9); x+4y=9. The equation of the line is y= .

4. Write an equation of the line containing the given point and parallel to the given line. Express your answer in the form y=mx+b. (-7,7); 8x=7y+9.

5. (3,4); 5x+y=7
These are the last ones I need and I just cannot come out with the correct answers. Please someone HELP! THank you.
Click here to see answer by Alan3354(69443)

Question 434871: This is what I have and I did something wrong. Any help would be appreciated. It wouldn't let me put my graph on here, but I have the points displayed.
f(x)=-2/(x^2+2x-3)
=(x+3)(x-1)
x=-3 or x=1
Domain is-3< x <1
x y
-3 0
-2 -3
-1 -4
0 -3
1 0

xmin=-4 ymin=-5
xmax=2 ymax=1
xscl=1 yscl=1

Click here to see answer by stanbon(75887)

Question 434928: graph 1/6^-.7
Click here to see answer by Alan3354(69443)

Question 434933: I need to solve graphically if possible:
x+y=8
x-y=8
Click here to see answer by stanbon(75887)

Question 434931: I need to solve graphically if possible:
2x+y=6
y=4x+6
Click here to see answer by mananth(16946)

Question 435031: $2000 total deposit with 2 savings accounts. One pays interest rate of 6%the other at rate of 8% if a total earned interest is $144 how much is each deposit
Click here to see answer by mananth(16946)

Question 435120: Could someone please show me step by step how to solve the system of equations by graphing then to classify the system?
x + y =9
x - y = -5
Click here to see answer by stanbon(75887)

Question 435123: 6x+2y=8
15x+5y=21
is the lines parallel, perpendicular, or neither
Click here to see answer by mananth(16946)

Question 435012: Need to see if this is a valid question:
Safe working load model for wire rope is: 4*D^2 = S
S is in Tons
D is in Inches
A 9-ton load requires a 1.5 inch diameter wire to lift it.
Q: When determining the safe working load S of a rope that is old or worn, decrease S by 50%. Write a model for S when using an old wire rope. What diameter of old wire rope do you need to safely lift a 9-ton load.
Why Decrease the Working Load by 50%? How do I solve this or is it valid? My equation results in a 1.06 inch Diameter. That has to be WRONG.
Click here to see answer by stanbon(75887)

Question 435177: What would the graph be for: y=2/3 times 4^x
Click here to see answer by Alan3354(69443)

Question 435240: what is the slop of y+x=4
Click here to see answer by 888(1)

Question 435476: which expression describes the area in square units of a rectangle that has a width of 5x squared yto the8 th power and a length of 3x to the third power y?
Click here to see answer by solver91311(24713)

Question 435689: the sides of a triangle are in the ratio 3:4:6. what is the length of each side if the perimeter is 104cm?
Click here to see answer by mananth(16946)

Question 435727: Could someone please show me how to solve by substitution method?
8x - 2y = -70
3x + 26 = y
Click here to see answer by ewatrrr(24785)

Question 435727: Could someone please show me how to solve by substitution method?
8x - 2y = -70
3x + 26 = y
Click here to see answer by rwm(914)

Question 435737: Could someone please show me how to solve by elimination method?
x + 3y =23
-x +8y = 32
Click here to see answer by rwm(914)

Question 435737: Could someone please show me how to solve by elimination method?
x + 3y =23
-x +8y = 32
Click here to see answer by richard1234(7193)

Question 435737: Could someone please show me how to solve by elimination method?
x + 3y =23
-x +8y = 32
Click here to see answer by ewatrrr(24785)

Question 435747: Could someone please show me how to solve the system by elimination method?
5x + 3y = -11
7x - 2y = 19
Click here to see answer by Alan3354(69443)

Question 435713: Solve by the elimination method.
2r-9s=-70
9r+2s=25
Click here to see answer by jorel1380(3719)

Question 435829: What is the slope of the graph of y = 6x - 1?
Click here to see answer by ewatrrr(24785)

Question 436008: how do i do -2x+3y=3

Click here to see answer by jorel1380(3719)

Question 436222: Could someone please show me how to solve the system by the elimination method?
5x + 3y = -11
7x -2y = 19
Click here to see answer by rwm(914)

Question 436222: Could someone please show me how to solve the system by the elimination method?
5x + 3y = -11
7x -2y = 19
Click here to see answer by htmentor(1343)

Question 436277: Could someone please show me how to solve this problem?
The perimeter of a rectangle is 128m. The length is 4m more than twice the width. Find the dimensions.
Click here to see answer by Gogonati(855)

Question 436375: Could someone please show me how to solve by substitution method?
8x+8y=-8
-2x+y=14
Click here to see answer by rfer(16322)

Question 436402: Could someone please check my work and show me how to finish this problem? solve by substitution
7m+n=42, m-7n=56
7m+n=42
7m=42-n
m=(42n)/7
m-7n=56
42-n-49=392
Click here to see answer by rfer(16322)

Question 436466: Architecture. Architects often use the equation x + y = 18 to determine the height y, in inches, of the riser of a step when the tread is x inches wide. Express the slope of stairs designed with this equation without using the variable y.
Click here to see answer by shree840(260)

Question 436510: The percentage of homes with digital TV services stood at 5% at the beginning of 1990 (t=0) and was projected to grow linearly so that, at the beginning of 2003 (t=4), the percentage of such homes was 25%.
A)Derive an equation of the line passing through the points A(0,5) and B(4,25).
B)Using the equation found in part A find the percentage of homes with digital TV services at the beginning of 2001.
Click here to see answer by stanbon(75887)

Question 436752: Which of the following is the equation of a line that is parallel to 4y = -12x + 9 and that has a y-intercept of -5?

A. y - 3x = -5
B. y = -2x + 5
C. y = -3x - 5
D. y = -2x - 6

Click here to see answer by stanbon(75887)

Question 436813: The abscissa is the ________-coordinate of a point.
Click here to see answer by richard1234(7193)

Question 436813: The abscissa is the ________-coordinate of a point.
Click here to see answer by shree840(260)

Question 436812: The point (5, 2) has an abscissa of _5________.
Click here to see answer by shree840(260)

Question 436822: The amount of money that a salesperson makes varies directly as the total amount of sales made. If the salesperson receives $7,500 for selling a house for $120,000, how much will he or she make if he or she sells a house for $150,000? Set up a proportion. I figured out the problem but am not sure how to show a check on it. Please help.
Click here to see answer by mananth(16946)

Question 436835: graph g(x)=(x-2)^2 describe the transformation that occurs

Click here to see answer by robertb(5830)

Question 436829: The following is the graph y=f(x)
Sketch the graph for y=f(x-1)

Click here to see answer by robertb(5830)

Question 436861: You need 30 tons of rock to cover the area. If each ton costs $50 and each tree is $84, what is the maximum number of trees you can buy with a budget of $2,400? Write an inequality that illustrates the problem and solve. Express your answer as an inequality and explain how you arrived at your answer.
Click here to see answer by mananth(16946)

Question 436894: How would I solve this problem?
Graph the equations of the system. Then solve the system to find the points of intersection.
x^2 + y^2 = 49
y = x^2 - 7
Do I need to find the intersections first before I can graph?
Thank you very much for your help.
Click here to see answer by ewatrrr(24785)

Question 436900: How would I solve this problem?
Graph the equations of the system. Then solve the system to find the points of intersection.
y = x^2 - 6x + 9
y = -x + 3
Do I need to find the intersections first before I can graph?
Thank you very much for your help.
Click here to see answer by ewatrrr(24785)

Question 436583: Could someone please help me to finish this problem? solve by substitution.
2x+4y=22
-6x+y=25
y=-6x+25
2x+4(6x+25)=22

Click here to see answer by ewatrrr(24785)

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