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

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Question 37525: Sally bought three chocolate bars and a pack of gum and paid $1.75. Jake bought two chocolate bars and four packs of gum and paid $2.00. Find the cost of a chocolate bar and the cost of a pack of gum.
Click here to see answer by fractalier(2101)

Question 37524: Rewrite the equation 2x – 3y = -6 as a funcion of x.
Click here to see answer by fractalier(2101)

Question 37523: Write the equation of the line which has y-intercept (0,5) and is perpendicular to the line with equation y = -3x + 1.
Click here to see answer by fractalier(2101)

Question 37419: 5(2b+1)-3(b+1)<7b+5
my answere was 1<14b but i am not certain that the answer i provided you is correct.
Click here to see answer by fractalier(2101)

Question 37717: One number is 12 more than another. The sum of the smaller number and twice the larger number is 39. Write the letter of the larger number.
a.17
b.5
c.34
d.7

Click here to see answer by junior403(76)

Question 37716: The sum of two numbers is 30. Their difference is 6. What are the two numbers?
Click here to see answer by checkley71(8403)

Question 37714: Solve the system by addition.
–3x + 5y = 8
x + 2y = 1
Click here to see answer by checkley71(8403)

Question 37715: Given g(x) = 5x – 4, write the value of g(2a)
Click here to see answer by junior403(76)

Question 37715: Given g(x) = 5x – 4, write the value of g(2a)
Click here to see answer by Nate(3500)

Question 37713: Given f(x) = x^2 + 3x – 1, find f(0).
Click here to see answer by Nate(3500)

Question 37762: Are the following lines parallel, perpendicular, or neither?
L1 through (–4, –7) and (1, 3)
L2 through (2, 6) and (4, 10)

Click here to see answer by junior403(76)

Question 37767: Write the equation of the line with slope and y-intercept (0, 3). Then graph the line.
Click here to see answer by fractalier(2101)

Question 37766: Write the equation of the line with slope 4 and y-intercept (0, –5). Then graph the line
Click here to see answer by fractalier(2101)

Question 36626: Can anyone help me with this problem????
I need to see what the graph would look like for f(x)=x^2+2
Please post the graph so that I can see what it looks like....thanks
Click here to see answer by junior403(76)

Question 37860: How do you solve an system by graphing. I see the problem x+y=-5 and-2x+y=1 now I need to figure out how to graph the problem so I can come up with the solution. Thank you!
Click here to see answer by Alwayscheerful(414)

Question 37920: Graph the line with equation
y= -x-5
Click here to see answer by Alwayscheerful(414)

Question 37918: What is the x intercept in the following equation.
3x + 5y = 30
Click here to see answer by Alwayscheerful(414)

Question 37981: From a square piece of cardboard with width x inches, a square of width x-3 inches is removed from the center. Write the area of the remaining piece as a function of x.
I'm having some difficulty with functions. Thank you for your time.
Click here to see answer by Earlsdon(6294)

Question 37995: find the value of "a" such that the graphs of 4y = ax+2 and 1/5y = 1/4x+ 7 are parallel
Click here to see answer by ilana(307)

Question 37994: write the equation of a line parallel to the x- axis and passing through (-8,6)
Click here to see answer by ilana(307)

Question 37991: Determine which two equations represent parallel lines.
a. y = -7x + 1
b. y = 7x + 1
c. y = 1/7x + 1
d. y = -7x + 2
Click here to see answer by ilana(307)

Question 37993: A rectangle has sides of 3x-4 and 7x + 10. Find the expression that represents its perimeter.
Click here to see answer by checkley71(8403)

Question 38042: Are the following lines parallel perpendicular or neither
L1 with equation x-5y=10
L2 with equation 5x+y=5
a. Parallel
B. Perpendicular
C. Neither
Click here to see answer by venugopalramana(3286)

Question 38049: how do i find the SLOPE of
a. (8,3), (-4,3)
b. (9,-2), (3,4)
Click here to see answer by fractalier(2101)

Question 38043: I don't remember doing this type of problem before.
Need to divide
a^17 divided by a^8
Click here to see answer by fractalier(2101)

Question 38043: I don't remember doing this type of problem before.
Need to divide
a^17 divided by a^8
Click here to see answer by askmemath(368)

Question 37963: y=|x|
Click here to see answer by benni1013(197)

Question 38083: Can someone tell me if I did this correctly
3(x-5) + 3x = 4x + 5
I get an answer of x = 10
Click here to see answer by junior403(76)

Question 38100: WHICH IS THE SOLUTION OF THE SYSTEM GIVEN BELOW?
Y=-X+2
Y=-X-5
A. (2,1) B. (2,5)
C. NO SOLUTION D. INFINITELY MANY SOLUTIONS
Click here to see answer by stanbon(57962)

Question 38100: WHICH IS THE SOLUTION OF THE SYSTEM GIVEN BELOW?
Y=-X+2
Y=-X-5
A. (2,1) B. (2,5)
C. NO SOLUTION D. INFINITELY MANY SOLUTIONS
Click here to see answer by junior403(76)

Question 38104: MATCH THE SYSTEM WITH IT'S SOLUTION AT THE RIGHT.
Y=X+1
Y=2X-1
A.(3,2)
B.(3,3)
C. (-2,3)
D. (2,3)

Click here to see answer by stanbon(57962)

Question 38109: MATCH EACH SYSTEM WITH THE CORRECT SOLUTION
X-Y=1
X=1/2Y+2
A. (3,2)
B. (3,3)
C.(-2,3)
D.(2,3)
Click here to see answer by fractalier(2101)

Question 38111: WHICH EQUATION IS PERPENDICULAR TO Y=4X+3?
A. Y=-4X-1
B. Y=-1/4X+2
C. Y=1/4X-6
D. Y=3X+9
Click here to see answer by fractalier(2101)

Question 38082: Solve the system by addition
5x + 9y = -12
x - 2y = 10
Click here to see answer by fractalier(2101)

Question 38127: MATCH EACH SYSTEM WITH IT'S SOLUTION
2Y=X+3
X=Y
B. (3,3)
C. (-2,3)
Click here to see answer by ilana(307)

Question 38135: SUPPOSE EACH ORDER PAIRS ARE FOR THE SAME DIRECT VARIATION. FIND EACH MISSING VALUE

A. (-1,2) AND (4,Y)
B. (X,-4) AND (-9,-12)
PLEASE HELP ME!!!!!!!!!!!!!!
Click here to see answer by stanbon(57962)

Question 38121: DRAW A GRAPH OF A DIRECT VARIATION THAT INCLUDES THE GIVEN POINT
A.(-2,5)
B. (3,2)
Click here to see answer by stanbon(57962)

Question 38115: I need help with the following. I have been looking online, and in my Ti83 calculator instructions and can't find help. When I enter the y=x(300-3x) into the y= button on my Ti83 calculator nothing comes up on the graph. My teacher did not explain how to do this, what little she did explain... does not work.
This problem is suppose to be done with a graphing calculator.
* The combined area of two adjacent corrals bordering a river is given by y=X(300-3x). Where X is the length in feet of the sides that end in the river and Y represents the total area of the two corrals. (The 300 represents comes from the fact that there is only 300 feet of fence.) Use your calculator to sketch the graph of y=x(300-3x.
a). the ordered pair (40,7200) is on the graph. This means that when the length of one side of the corrals is 40 ft, the area is 7200 ft^2. Interpret what this ordered pair (80, 4800) represents in the context of this problem.
b). what is the area of these corrals if x=25? What are the dimensions of the corrals?
c). what values of x make sense in the context of this problem? HINT:lengths and areas can not be negative.
d). what x-value yields the maximun area? HINT:Find the maximun on the graph using your calculator. What would be the dimensions of the corrals?
Click here to see answer by stanbon(57962)

Question 38158: ok I need to graph and get the intercepts for the problem y = -4x^2 +16x - 12 I know its a downward cone shape but I cannot get the vertex or the intercepts right.
Click here to see answer by Cintchr(481)

Question 38184: Please I desperate need your help on the following graphing of each inequality. I really apprecate your help.
1) Y < 1/2 x +2
2) x - 3y < 9
3) Y GREATER THAN WITH LINE UNDERNEATH x - 6
4) x GREATER THAN WITH LINE UNDERNEATH -6
Click here to see answer by josmiceli(9817)

Question 38172: Could you please help me with this one?
The equation of a line that contains the point (-2,4) and is parellel to y=2x-3.
Click here to see answer by fractalier(2101)

Question 38108: MATCH EACH SYSTEM WITH IT'S SOLUTION
2Y=X+3
X=Y
A. (3,2)
B. (3,3)
C. (-2,3)
D. (2,3)
Click here to see answer by fractalier(2101)

Question 38105: MATCH EACH SYSTEM WITH IT'S CORRECT SOLUTION.
2Y-8=X
2Y+2X=2
A. (3,2)
B.(3,3)
C. (-2,3)
D. (2,3)
Click here to see answer by fractalier(2101)

Question 38228: Would you mind helping me at this problem? I'm not the best at Algebra...especially point-slope equations and linear equations.
Find the slope of y-intercept:
y=-4x-9
m= ?
b= ?
Here's one other question like it that I can't figure out.
2x + 3y= 9
m= ?
b= ?
These are the only two questions that I have problems with. These are pretty easy...to my teacher...yet...I just have a hard time grasping the concept. Please help! Thank you.
Click here to see answer by stanbon(57962)

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