Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Algebra: Linear Equations, Graphs, Slope

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Question 81563: solve for x
3x + 1/2 = 1/4
Click here to see answer by ankor@dixie-net.com(6693)

Question 81693: How do I write the equation of the line with slope -1/2 and y-intercept (0, 3)?
Click here to see answer by scott8148(3385)

Question 81693: How do I write the equation of the line with slope -1/2 and y-intercept (0, 3)?
Click here to see answer by checkley75(3666)

Question 81692: How do I graph y = 3/4x - 4?
Click here to see answer by matthewatcfs(3)

Question 81689: How do I solve the system by substitution?
3x – y = –7
x + y = –9

Click here to see answer by checkley75(3666)

Question 81688: How do I solve the system by graphing?
3x + y = 6
3x – y = 0
Click here to see answer by matthewatcfs(3)

Question 81688: How do I solve the system by graphing?
3x + y = 6
3x – y = 0
Click here to see answer by checkley75(3666)

Question 81659: At what points does the line 4x + 12 = 3y cross the x and y axes?
Click here to see answer by scott8148(3385)

Question 81659: At what points does the line 4x + 12 = 3y cross the x and y axes?
Click here to see answer by matthewatcfs(3)

Question 81747: would someone help me to figure out how to find the second part of this problem and graph it please. Thanks
Given f(x)=-x-4, find f(a-3)
Click here to see answer by bucky(1732)

Question 81751: 6. A roof rises 7.5 ft over a horizontal distance of 12.27 ft. What is the slope of the roof to the nearest hundredth?
A) 1.64 B) 0.61 C) 1.95 D) 0.52

Click here to see answer by rapaljer(3622)

Question 81764: Determine which two equations represent parallel lines.
a)y=-9x+4
b)y=9x+4
c)y=1/9x+4
d)y=-9x+5
Click here to see answer by rapaljer(3622)

Question 81763: Determine which two equations represent perpendicular lines.
a)y=5/3x-3
b)y=3x-5/3
c)y=-1/3x+5/3
d)y=1/3x-5/3
Click here to see answer by bucky(1732)

Question 81769: How do I subtract and solve 2x – 3x2 + 5x3 from 5x3 + 4x – x2?
Click here to see answer by dolly(163)

Question 81814: Can someone assit me with this problem? I am stuck.
The volume of a cumbe is given by V=s3, where s is the length of a side. Find the length of a side fo a cube if the volume is 1000 cm3
Answer:
Show work here:

Click here to see answer by rapaljer(3622)

Question 81830: I'm lost on this one, how do u solve?
Multiply: 3xy2(5xy – 4x + 6y)
Click here to see answer by vertciel(183)

Question 81816: Suppose your travel north for 65 kilometers then travel east 75 kilometers. How far are you from your starting point?
Answer:
Show work here:
Click here to see answer by Nate(3495)

Question 81210: help I need to find the slope for the passes through here is the equation
m=3(1,^2)
this is what I have done but come up with the wrong answer
y=mx+b
y=3x+b
^2=3x(1)+b
than I am just lost
Click here to see answer by vertciel(183)

Question 81873: What's the slope of the line containing the points (-3,4) and (-3,-7)
Click here to see answer by checkley75(3666)

Question 81873: What's the slope of the line containing the points (-3,4) and (-3,-7)
Click here to see answer by tutor_paul(424)

Question 81871: What's the linear equation of these ordered pairs?
(6,-2) (-9,3) (-6,2)
Click here to see answer by checkley75(3666)

Question 81952: can somone solve the following equations and show me how it was done! I'm as dumb as a post when it comes to this stuff. Any help would be great!
√x-2=1

√x3=27
3√x2=9
Click here to see answer by neta(14)

Question 82076: find the slope of the line that contains each pair of points
M(0,-3), N(4,6)
if you can help me that would be great and thanks a lot

Click here to see answer by stanbon(26296)

Question 82082: I'm stuck again! :-) Can anyone help me with this? Thanks
Graph the functions y = x and y=2√x on the same graph (by plotting points if necessary). Show the points of intersection of these two graphs.
Graph:

Points of intersection:

Click here to see answer by checkley75(3666)

Question 82080: Can someone assist me in this problem? Thanks in advance.

A right triangle is a triangle with one angle measuring 90°. In a right triangle, the lengths of the sides are related by the Pythagorean Theorem,c2=a2+b2 , where c is the length of the hypotenuse (the side opposite the 90° angle). Find the length of the hypotenuse when the other two sides’ measurements are 6 feet and 8 feet
Click here to see answer by checkley75(3666)

Question 82102: graph y=-1
Click here to see answer by funmath(2873)

Question 82119: Would someone show me step by step how to work this problem Please? Thank You.
Write the equation of the line with slope 4 and y-intercept (0,-5). Then graph the line.
Click here to see answer by checkley75(3666)

Question 82116: Please help. Thank You. Please show step by step, and these are my choices for the answer:
A)x=-6
B)x=7
C)y=-6
D)y=7
Write the equation of the line that passes through point (-6,7) with a slope of o.

Click here to see answer by checkley75(3666)

Question 82149: Find the point on the positive y-axis that is a distance 5 from the point
P(3,4). The answer is multiple choice.
a. A(0,6)
b. A(0,8)
c. A(6,0)
d. A(8,0)
Click here to see answer by Edwin McCravy(2922)

Question 82150: If P(4,-5) is a point on the graph of the function y=f(x), find the corresponding point on the graph of y=2f(x-6). The answer is multiple choice.
a. (1,8)
b. (2,-5)
c. (6,8)
d. (10,-10)
Click here to see answer by jim_thompson5910(13794)

Question 82166: please help.
Find the y-intercept.
x+3y=-9
Click here to see answer by checkley75(3666)

Question 82171: Hello out there,I need some help with some slope problems that is giving me a hard time,the first one is,Write the point-slope form of the line that passes through (3,-3)and (5,1).The second one is,Write an equation in slope-intercept form of the line having the given slope and passing through the given point:m=o,(0,-3).The next one is,Write the equation in slope-intercept form of the passing through each pair of points:(6,-2)and (3,-4).The last one is,Write the equation in slope-intercept form of the line passing through each pair of points:(-8,2)and (0,6),thanks for whoever can help.
Click here to see answer by jim_thompson5910(13794)

Question 82152: OK, the problem is: Solve the system of equations using the substitution method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
-7x + y = 4
2x + 8y = 0
my understanding is; I should first solve the top equation because the y has a coefficient of 1 (not sure why, but that's my guess) when I do this I get:
x = -(-y+4/7) and then I am lost . . .
Click here to see answer by jim_thompson5910(13794)

Question 82196: There there really a solution for this? Help please!!!

For the equation x-2√x=0 solve for all values of x that satisfies the equation
Click here to see answer by stanbon(26296)

Question 82194: Would someone please show me step by step how to figure out this problem?
Find the slope
-6x-9y=12
Click here to see answer by stanbon(26296)

Question 82194: Would someone please show me step by step how to figure out this problem?
Find the slope
-6x-9y=12
Click here to see answer by scott8148(3385)

Question 82207: The problem is: Solve the system of equations using the addition (elimination) method.
If the answer is a unique solution, present it as an ordered pair: (x, y). If not, specify whether the answer is “no solution” or “infinitely many solutions.”
x + y = 4
2x – y = 2
I have no clue how to even begin these types of problems. Any help is greatly appreciated.
Click here to see answer by stanbon(26296)

Question 82139: x -2 -1 0 1 2
y .111 .333 1 3 9
Given the table above, graph the function, identify the graph of the function (line, parabola, hyperbola, or exponential), explain your choice, and give the domain and range as shown in the graph, and also the domain and range of the entire function. show work
Click here to see answer by scott8148(3385)

Question 82230: please help.
Solve.
2/5x=-10
thaks.
Click here to see answer by neta(14)

Question 82226: please help.
Solve.
7x+2=6x

thank you.
Click here to see answer by help101(1)

Question 82251: Find the slope of any line perpendicular to the line through points (6,3) and (7,7)
Click here to see answer by stanbon(26296)

Question 82223: I know how to do graphs but I do not know how to do slopes could someone help me please.
Find the slope of the graphed line
I did the graph and I tried to copy and paste it here but it would not paste. The graph points are (-5,-2) and (5,-2) with a trend line going through from the left side to the right side. I am sorry that I could not put the actual graph here it would have been easier for you to understand what I am talking about, but all of you are smarter in math than I am you should be able to figure it out without any problems. Again Thank all of you for all of your help.
Click here to see answer by jim_thompson5910(13794)

Question 82219: help please solve the following problem step by step please
Find the sope of the line passing through the points (1,1) and (3,3)
Click here to see answer by jim_thompson5910(13794)

Question 82273This question is from textbook algebra 2
: Write the equation in standard form.
10. y=2/3x+1This question is from textbook algebra 2

Click here to see answer by tutorcecilia(2042)

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