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

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Question 363717: How do you graph the linear equation x=1
Click here to see answer by robertb(4012)

Question 363721: How do you solve this question?
The amount of water in a leaky bucket is given by the linear funtion f(t)=117-6t where f(t) is in ounces and t is in minutes. Find the amount of water in the bucket after 6 minutes.
Click here to see answer by robertb(4012)

Question 363718: How do you solve and graph the following linear equation?
y=-1x
Click here to see answer by robertb(4012)

Question 363709: How do you solve and graph the following linear equation?
-x=5y-3
Click here to see answer by robertb(4012)

Question 363842: find a point on the x axis that is equidistant from (-1,-1) and (7,7)
Click here to see answer by stanbon(57347)

Question 363843: Factor 8m^2+6m-5 without guess and check
Click here to see answer by Alan3354(30993)

Question 363831: How do you solve the following equations?
1.4/3x-1/6(x+12)=12
2. 4(x-2)=-(3x+1)
3. 42 is 28% of what number?
4. -3+x=5
50 3(x-4)=2x
Thank you for your help.
Click here to see answer by checkley77(12569)

Question 363830: I need help in solving the system of equations by elimination.
1. 2x-y=3; x+2y=-1
2. x+2y=-4; 2x-3y=1
3. Solve the system of equations by substitution. 3x+y=3; y=-x-3
How do you solve the system of equations by graphing?
4. x+2y=-1; 2x+2y=-4
5. y=2x; y=x+2
Thank you for help.

Click here to see answer by ewatrrr(10682)

Question 363807: Find the supply equation using the given information. (Let x be the number of items.)
At a price of $1600 a supplier will supply 170 items. If the price decreases by $100, then the supplier will supply 20 fewer items.
Click here to see answer by ewatrrr(10682)

Question 363864: half the difference between two numbers is 2.the sum of the greater number and twice the smaller number is 13. find the numbers
Click here to see answer by amoresroy(333)

Question 363876: find ordered pairs for 7y=4x+18 and y=-8x+54 please I cant seem to understand how to find solution by substitution????
Click here to see answer by amoresroy(333)

Question 363876: find ordered pairs for 7y=4x+18 and y=-8x+54 please I cant seem to understand how to find solution by substitution????
Click here to see answer by unlockmath(1599)

Question 363945: what is 3x-5y=-20
Click here to see answer by Alan3354(30993)

Question 363912: Ace Appliances charges a $45 fee plus $75 per hour for servicing refrigerators. Appliance Assessors charges a $60 fee plus $65 per hour. How many repair hours would make Appliance Assessors less expensive than Ace Appliances?
Click here to see answer by robertb(4012)

Question 364035: Can I get help showing me the steps on how to answer this question? (7,9);4x+y=8 Thank you
Click here to see answer by nerdybill(6958)

Question 364077: Solve the system of linear equations. If a unique solution does not exist, state whether the system is inconsistent or dependent.
-x - y = 4
x - y = -8

Click here to see answer by amoresroy(333)

Question 364058: 4x + 3y = 6
so far have 3y= -4x + 6
y = - 4/3 + 2
thanks
Click here to see answer by Alan3354(30993)

Question 364099: A) find linear equation to approximate CPI y in year x, with x=0 corresponding to 1993 when CPI is 144.5 in 1993 & 184.2 in 2003 b) Estimate CPI in 2007 C) What rate is CPI increasing?
factor & solve: x2-5x+6=0, 5x2+17x+6=0 & x2-7x-30=0
Thanks.
Click here to see answer by ewatrrr(10682)

Question 364105: What are the table of ordered pairs for the equation 4x+3y=-12 ?
Click here to see answer by ewatrrr(10682)

Question 364201: find the slope intercept equation for the line with the given characteristics slope 6.1 and y intercept (0,-6)
Click here to see answer by ewatrrr(10682)

Question 364284: Find the missing coordinate
(-2,-1) and (-7,y) slope=2/3
Click here to see answer by rfer(12657)

Question 364297: Can someone help me factor?
125x^2 − 27y^3
Thanks!
Click here to see answer by Alan3354(30993)

Question 364247: Y=4x
Click here to see answer by Fombitz(13828)

Question 364283: how do you find the missing coordinate.
(x,3) and (6,-2) Slope=1/5

Click here to see answer by Fombitz(13828)

Question 364380: Find the missing coordinate.
A=(3,2)and B= (7,__) m = -2
Click here to see answer by robertb(4012)

Question 364334: Solving a System of Linear Equations by Elimination/Subtraction
Can you help me solve this equation? Also, can you explain it too?
3x-3y=-6
-5x+6y=12
Thank you!!!
Click here to see answer by mananth(12270)

Question 364451: Line L passes through the points (-2,0) and (0,a). Line LL passes through the points (4,0) and (6,2). What value of a makes the two lines parallel?
A) 1/2
B) -2
C) 2
D) -1/2
E) 0
Click here to see answer by mananth(12270)

Question 364387: Perform a long division:
2u^3 - 13 u^2 -8u + 7 /u - 7
Click here to see answer by Fombitz(13828)

Question 364293: Determine the value of k for which the system of linear equations has no solution.
2x - y = -16
4x + ky= -3
Click here to see answer by Fombitz(13828)

Question 364507: the line through ( -2,5)with slope -1
Click here to see answer by nerdybill(6958)

Question 364535: Find the slope of the line y= 10/3 x-12

Click here to see answer by nerdybill(6958)

Question 364545: Find a piecewise definition of "f" that does not involve the absolute value function. Sketch the graph of "f", and find the domain, range, and the values of X in the domain of "f" at which "f" is discontinuous.
fx = 2 - |x|
Click here to see answer by Fombitz(13828)

Question 364612: Consider the curve y= 2/x with x>0. The normal to the curve y= 2x at point P untersects the y axis at (0,-3). Find the point P?
I understand the gradient of the normal is -2/x^2 and the equation using (0,-3)
making 2/x = -2/x^2-3 so -2/x^2-2/x-3 but can't think of where else to go
Note: At somepoint in the in solving this problem you may be required to solve a non trivial possibly high degree polynomial equation. in that case trial and error may be required but note that the answer should be a possitive integer smaller than 5
Click here to see answer by Fombitz(13828)

Question 364646: solve the system of equations by graphing
y=2x
3x-y=2
Click here to see answer by Fombitz(13828)

Question 364660: Consider the curve y= 2/x with x>0. The normal to the curve at point P intersects the y axis at (0,-3). Find the point P?
I understand the gradient of the normal is -2/x^2 and the equation using (0,-3)
making 2/x = -2/x^2-3 so -2/x^2-2/x-3 but can't think of where else to go

Note: At somepoint in the in solving this problem you may be required to solve a non trivial possibly high degree polynomial equation. in that case trial and error may be required but note that the answer should be a possitive integer smaller than 5
Click here to see answer by Fombitz(13828)

Question 364652: Value of computer software. The value v of a shopkeeper’s inventory software program, in hundreds of dollars, is given by
v = -3/4 t + 6

where t is the number of years since the shopkeeper first bought the program. Graph the equation and use the graph to estimate what the program is worth 4 yr after it was first purchased.

Click here to see answer by rfer(12657)

Question 364829: 2(7+3t)=-t
Click here to see answer by mananth(12270)

Question 364890: Find the -intercept of the line whose equation is -5/2x +13/3
Click here to see answer by Alan3354(30993)

Question 364907: what is the average rate of change in the number of farms per year if:
in 1980 there were 127,000 farms in a state; in 2005 there were 79,000
Click here to see answer by mananth(12270)

Question 364943: what is the slope for y=-2x+2
Click here to see answer by mananth(12270)

Question 364933: A= 1/2bh
Click here to see answer by Fombitz(13828)

Question 364877: Find the equation of the line that passes through the point(8,-5) and is perpendicular to the line 4x-12y=6. According to the teacher the answer is:
y=-3x+19, but I don't understand how.
Thankyou
Click here to see answer by Fombitz(13828)

Question 364959: -x+5y=10
Click here to see answer by Fombitz(13828)

Question 365010: 14. Solve the equation. 0.6(y + 4) = -1.2
Click here to see answer by Fombitz(13828)

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