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

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Question 926147: Find the slope
(-4,2) and (2,6)
Click here to see answer by jim_thompson5910(35256)

Question 926149: Factor f(x) into linear factors given that k is a zero of f(x).
f(x)=x^3+(12-4i)x^2+(32-48i)x-128i, k=4i
In completely factored form, f(x) =____
(factor completely. simplify your answer)

Click here to see answer by MathLover1(20849)

Question 926256: solve 3x-5/y=8
Click here to see answer by stanbon(75887)

Question 926363: what does it mean when it saids "Write an equation of a linear function that has the given values: (-1,-2) (2,0)"
Click here to see answer by josgarithmetic(39617)

Question 926378: The graph ofx=5 is perpendicular to (1)x-axis (2)y-axis (3)line y=x (4) line y=-x
Click here to see answer by MathLover1(20849)

Question 926719: how do I findthe slope of the line x=4
Click here to see answer by MathLover1(20849)

Question 926802: The line contains the point (-2, -3) and is parallel to the line containing (3,8) and (4,7).
Click here to see answer by stanbon(75887)

Question 926789: I want the answer of x1 , x2 and x3
X1-5x2+4x3=-3
2x1-7x2+3x3=-2
-2x1+x2+7x3=-1
Click here to see answer by Fombitz(32388)

Question 926995: The product of 14 and the sum of 30 and an unknown number is equal to -196.What is the equation for the given statement?
Click here to see answer by Fombitz(32388)

Question 927207: The manager of a fish store has water that is 10% salt and water that is 25% salt. He needs to fill an aquarium with 5 gallons of water that is 20% salt.
A.) write a system of linear equations that you can use to determine how many gallons of each type of salt water the manager should combine. Be sure to define your variables.
B.) solve the system and determine how many gallons of eah type of salt water the manager should combine. Show all your work
Click here to see answer by TimothyLamb(4379)

Question 927230: write an equation in standard form of a line that is perpendicular to the line 7x+3y=18 and contains the point (6,8).

how do u solve this?
Click here to see answer by Fombitz(32388)

Question 927256: x+3>6

Click here to see answer by rfer(16322)

Question 927288: x+2y=6 and x-y=3 please help!!
Click here to see answer by Alan3354(69443)

Question 927413: 5) An electronics discount chain has a sale on a certain brand of stereo. The chain has stores in Batu Pahat and Malacca and warehouses in Selangor and Seremban. To satisfy rush orders, 15 sets must be shipped from the warehouses to the Batu Pahat store, and 19 must be shipped to the Malacca store. The cost of shipping a set is RM5 from Selangor to Batu Pahat, RM6 from Selangor to Malacca, RM4 from Seremban to Batu Pahat, and RM5.50 from Seremban to Malacca. If the Selangor warehouse has 24 sets and the Seremban warehouse has 18 sets in stock, how many sets should be shipped from each warehouse to each store to fill the orders at a minimum shipping cost?

Click here to see answer by Theo(13342)

Question 927404: The width of a rectangle is 2/3 of its length. If the perimeter is 80 cm find its dimensions

Click here to see answer by TimothyLamb(4379)

Question 927485: if x +2y=32 and y / 2x=0.75 what are the values for x and y?
Click here to see answer by brysca(112)

Question 927485: if x +2y=32 and y / 2x=0.75 what are the values for x and y?
Click here to see answer by MathTherapy(10552)

Question 927546: Find the slope of the line passing through the given points.
(1/2, 3/4) and (3/2, 7/4)
Find the slope of the line passing through the given points,
(-23, 9) and (43,9)
Click here to see answer by Alan3354(69443)

Question 928203: How would I solve x +5y=18 and 3x+2y=-11 by the elimination method
thanks
Click here to see answer by TimothyLamb(4379)

Question 928171: Find the value of k so that the point (-2,10) is on the line y=kx-3k
Click here to see answer by TimothyLamb(4379)

Question 928244: write an equation in standard form for a line that is parallel to the line with an equation of y=3x-5 that passes through the point (8,5)
Click here to see answer by TimothyLamb(4379)

Question 928351: A total of $10,000 is invested in two funds paying 7% and 10% simple interest. (There is more risk in the 10% fund.) The combined annual interest for the two funds is $805. The system of equations that represents this situation is

x + y = 10,000
0.07x + 0.10y = 805
where x represents the amount invested in the 7% fund and y represents the amount invested in the 10% fund. Solve this system to determine how much of the $10,000 is invested at each rate.
7% Fund= $
10% Fund=$

Click here to see answer by richwmiller(17219)

Question 928496: Tony's Coffee Shop makes a blend that is a mixture of two types of coffee. Type A coffee costs Tony $5.55 per pound, and type B coffee costs $4.20 per pound. This month's blend used twice as many pounds of type B coffee as type A, for a total cost of $502.20 How many pounds of type A coffee were used?
Click here to see answer by TimothyLamb(4379)

Question 928567: -3x +6y=-27 I solved for Y. my answer is y=1/2x -9/2 now I'm solving for x. It says let x be -1 The answer is -5 but I don't know how they got that. Could you show me the steps please? Thanks

Click here to see answer by TimothyLamb(4379)

Question 928574: Find the equation of a line from the given information. Graph and label the line in standard form.
y-intercept of -2 and slope of 1/3.
Click here to see answer by TimothyLamb(4379)

Question 928580: Make a scatter plot of the data. Find the equation of the best fitting line. Approximate the value of y for x = 5
x: 2 / 4 / 6 / 8 / 10
y: 6.2/ 22.5/ 40.2/ 55.4 / 72.1
Click here to see answer by TimothyLamb(4379)

Question 928633: What is the parallel equation passes through the origin 3x-6y=12
Click here to see answer by MathLover1(20849)

Question 928740: X+3y=6 2x+3y=18 solve by substitution
Click here to see answer by rfer(16322)

Question 928887: Complete the equations of the system in slope-intercept form. Use a decimal for the slope if necessary.

Line 1
x y
�3 7
�2 5
Line 2
x y
0 5
2 1

Line 1: y = x +
Line 2: y = x +
Click here to see answer by ewatrrr(24785)

Question 928919: Given the point slope equation y+9=-5(x-8), state the slope and the indicated point of the graph
Click here to see answer by Fombitz(32388)

Question 929070: y= x-3
y= -x+ 7
What's the solution ?

Click here to see answer by ewatrrr(24785)

Question 929070: y= x-3
y= -x+ 7
What's the solution ?

Click here to see answer by MathLover1(20849)

Question 929120: 6. What is the value of k such that the graph of the equation will pass through (0, -8)?
a. y=5x+k
b. y=6x+k
c. y=7x+k
d. y=100x+k
e. y=2x+k
f. What pattern do you notice about the values of k?
Click here to see answer by TimothyLamb(4379)

Question 929315: A line passes through the points (-10,-4)(-1,2)What is the slope of the line that passes through the two points?
Click here to see answer by ewatrrr(24785)

Question 929395: the scale of a map is 1 in : 45 mi. Determine the distance between 2 cities that are 135 mi. How far are they apart on the map?
Click here to see answer by TimothyLamb(4379)

Question 929514: My daughter is trying to solve 2x(4y+z). She can't figure out how to do it and I don't remember how to do it, in order to help her. Could you explain HOW to solve this equation? Please?
Click here to see answer by Alan3354(69443)

Question 929541: what is the linear equation y=-7
Click here to see answer by Theo(13342)

Question 929539: Write the equation of the line in either point-slope form or slope-intercept form.
Write the equation of a line that has a slope of -3 and passes through the point (1.25, -4).

Click here to see answer by josgarithmetic(39617)

Question 929543: graph the linear equation y+9=0
Click here to see answer by jim_thompson5910(35256)

Question 929571: Find the slope (2,1) and (8,4)
Click here to see answer by jim_thompson5910(35256)

Question 929574: identify the slope and y intercept of the line with the given equation

Y= -x + 9
Click here to see answer by jim_thompson5910(35256)

Question 929574: identify the slope and y intercept of the line with the given equation

Y= -x + 9
Click here to see answer by MathLover1(20849)

Question 929572: Find the slope
(-4,-1) and (-1,-1)
Click here to see answer by MathLover1(20849)

Question 929580: identify thes slope and y intercept of the line with the given equation
2x + 9y= -18
Click here to see answer by MathLover1(20849)

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