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

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Question 450916: Write the slope-intercept equation for the line with slope 1/2 and y-intercept (0, -5) and graph the line.
Click here to see answer by rfer(12670)

Question 450917: Write the slope-intercept equation for the line that passes through (6, -9) and has slope -7/6. Please show all of your work
Click here to see answer by rfer(12670)

Question 451182: Annual profit in thousands of dollars is given by the function, P(x) = 12x - 100, where x is the number of items sold in thousands, x ≥ 10.
1.describe the meaning of the number 12 in the formula

Click here to see answer by ewatrrr(10682)

Question 451241: y=3-x
3x + 3y =9
graph both
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Question 451233: Demonstrate by determining the slope of "3x + 5y = 19."
Click here to see answer by lwsshak3(6522)

Question 450803: Write an equation in slope-intercept form for each line described.
A)Slope= 8 passes through (-7,5)
B)Vertical and passes through (-4,-2)
Click here to see answer by lwsshak3(6522)

Question 451297: Write an equation of the line the passes through (-5,8) and (-3,-8)
Click here to see answer by jim_thompson5910(28598)

Question 451296: Write an equation of the line the passes through (-5,8) and (-3,-8)

Click here to see answer by jim_thompson5910(28598)

Question 451320: without graphing, tell weather the lines with equations y=7x-1 and y=7x+3 are parallel, perpendicular, or neither. explain.
Click here to see answer by josmiceli(9697)

Question 451300: what is the slope in y=-2x+3
Click here to see answer by richard1234(5390)

Question 451302: Write the equation of the line with the given slope and y-intercept: m=1/4, b=-3/4
Click here to see answer by Alan3354(30993)

Question 451340: If the line passing through the points (a, 1) and (2, 3) is parallel to the line passing through the points (3, 10) and (a + 2, 1), what is the value of a?
Click here to see answer by ankor@dixie-net.com(15661)

Question 451495: Please help. My question is to write an equation in slope-intercept form for the line: Slope=1 and y-intercept =0. Thank you.
Click here to see answer by stanbon(57395)

Question 451456: Find the x and y intercepts and one other point of the line 2x-y= -7
Click here to see answer by robertb(4012)

Question 451522: como determino los valores de k para que el sistema de ecuaciones lineal tenga numero infinito
kx+y=4
2x-3y=-12

Click here to see answer by robertb(4012)

Question 451578: Find the slope of the line.
(5,2),(-4,-2)
Type an integer or a simplified
Click here to see answer by nerdybill(6963)

Question 451696: I need help learning how to start and finish these three problems. My linear programming is kind of sketchy so if you can explain it better than my teacher it would be greatly appreciated.
First problem asks for me to" Minimize the objective function 1/2x+3/4y subject to the constraints
2x+2y greater than equal to 8
3x+5y greater than equal to 16
X greater than equal equal to 0
y greater than equal to 0
Second problem goes as follows" n electronics company has factories in Cleveland and Toledo that manufacture three head and four head VCR's. Each day the Cleveland factory produces 500 three head VCRs and 300 four head VCRs at a cost of $18000. Each day the Toledo factory produces 300 of each type of VCR at a cost of $15000. An order is received for 25,000 three head VCRs and 21,000 four head VCRs. For how many days should each factory operate to fill the order at the least cost.
"our teacher gave us the following answers Cleveland should operate for 20 days and Toledo should operate for 50 days. I just need to learn how to come up with those answers.
My last questions goes as follows " A contractor builds two types of homes. The first type requires one lot, $12,000 capital, and 150 labor-days to build and is sold for a profit of $2400. The second type of home requires one lot, $32,000 capital, and 200 labor days to build and is sold for profit of $3400. The contractor owns 150 lots and has available for the job $2,880,000 capital and 24,000 labor days. How many homes of each type should she build to realize the greatest profit? "Again he gave us a answer of 80 for type 1 and 60 for type 2. Any help would be appreciated thanks in advance.
Click here to see answer by solver91311(16897)

Question 451720: How can I determine if two lines are perendicular?
Click here to see answer by ewatrrr(10682)

Question 451720: How can I determine if two lines are perendicular?
Click here to see answer by richard1234(5390)

Question 451749: Find three consecutive integers such that five times the first integer plus twice the second is equal to six times the third.

Click here to see answer by ewatrrr(10682)

Question 450244: I am wondering how do I factor
81x^2-72x+16
Click here to see answer by ewatrrr(10682)

Question 451910: Please help me find the slope of
9 -1/2= 6x with y being the intercept.
Click here to see answer by stanbon(57395)

Question 451943: The units of a certain number is one greater than twice the tens digit. If the digits are reversed, the new number is 36 more than the original number. Find the original number
Click here to see answer by jorel1380(2518)

Question 452065: Write each equation in slop-intercept form. Then identify the slope and the y-intercept for each line.
2x - y = 12
Find an equation of the line that passes through the given point and has the given slope. Express your answer in slope-intercept form.
(8,0),m= -3
Click here to see answer by AHBK(13)

Question 452108: Find the slop and the y-intercept.
f(x)=-2-10
The slop is _____?
The y-intercept is (0,__)
Click here to see answer by Alan3354(30993)

Question 452130: What is the slope and y-intercept of 9 - 1/4y = 7x
Click here to see answer by Gogonati(809)

Question 452144: Find the slope and the y-intercept of the line.
7x = 5y+40
I'm confused because the other examples don't have the equals sign in this place. So, I'm not sure how to break up the equation.
Click here to see answer by ankor@dixie-net.com(15661)

Question 452147: how do you solve for the problem- 11x+2=20
Click here to see answer by MathLover1(6638)

Question 452174: if the slope of a line is 1/2 and the y-intercept is -2, what is the linear equation in the slope-intercept form?
Click here to see answer by solver91311(16897)

Question 452233: You pay 50 dollars for a meal which includes tip. You gave a 18% tip. How much was the meal before tip?
Click here to see answer by stanbon(57395)

Question 452133: What is the equation for the line containing given point and parallel to the given line: (5,-4); 4x-3y=8
Please simplify the answer and type in the form y=mx+b using integers or fractions.
Click here to see answer by ankor@dixie-net.com(15661)

Question 452251: I'm 39, back in college and taking Algebra. My least favorite subject. I'm at a 3.96 GPA and I can't figure out this stuff!
I can't figure out how exactly to graph out a equation. I have to calculate the slope, x-intercept and y-intercept and label them.
y=x+3
Click here to see answer by josmiceli(9697)

Question 452254: I need help solving
x + 2 = 6 I may know the answers on some of these problems but I would like to know how to solve them myself.
Click here to see answer by edjones(7569)

Question 452274: show that 8n cannot end with digit 0 for any natural number n.
Click here to see answer by rwm(914)

Question 452264: a year hence a father will be 5 times as old as hi son.Two years ago,the father was three times as old as his son will be 4 years hence.Find their present ages.

Click here to see answer by rwm(914)

Question 452491: Find the slop, if it exists, of the line containing the pair of points.
(5,2) and (10,-2)
A. The slop m= _____. (simplify your answer. type an integaer or a fraction.)
B. The slope is undefined.
Click here to see answer by Love math(28)

Question 452801: (2,-3);m=3
Click here to see answer by rfer(12670)

Question 453025: Find the slope and y intercept of: 2x-3y=0 second question is find slope and y intercept for x=-2
Click here to see answer by stanbon(57395)

Question 453112: Evaluate y(x-5) for x=6 and y=2
y(x-5)=
Click here to see answer by solver91311(16897)

Question 453122: Solve the equation.
1/5x = 4/25
The solution set is ___ Simplify the answer.
Click here to see answer by stanbon(57395)

Question 453123: Solve for m using the addition principle
m-5/4 = 9/8
The solution is m= __
Simplify answer. Type a fraction
Click here to see answer by stanbon(57395)

Question 453176: could you show me how to solve this problem step by step. I have another one close to this one for my homework, and I want to learn how to do these.
Wildcat Oil Company has two refineries, one located in Houston and the other in Tulsa, which produce a total of 1,600,000 gallons of petroleum per year. The Houston refinery ships 60% of its petroleum to the chicago gas company, while the Tulsa refinery ships 30% of it petroleum to the same chicago gas company. Assume that over the year, the Chicago gas company received 690,000 gallons of petroleum. How many gallons of petroleum were produced at each of Wildcat's refineries?
Click here to see answer by pedjajov(51)

Question 453131: I am in pre-algebra class, we are studing Location of poins, (I got this) order of pair solution ( I don't understand the steps) Please solve the problem and explain the steps:
(4,3);y=2x-5
Click here to see answer by ankor@dixie-net.com(15661)

Question 453250: find the slope of 4x+y=8.

Click here to see answer by rfer(12670)

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