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

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 Algebra: Linear Equations, Graphs, Slope Solvers Lessons Answers archive Quiz In Depth

 Question 251186: Explain whether or not you agree or disagree with the following statement: "Whenever you change the slope of a line, you change the intercepts of that line. It follows, then, that whenever you change intercepts of a line, you change the slope of that line." Click here to see answer by vksarvepalli(154)

 Question 251331: I have an equation (1,1); m=3 May you help me on what is the equation of the line that passes through the given points and has the given slope m? please may you help me with the right answer and the correct steps so I can see how you did it. Click here to see answer by edjones(7569)

 Question 251333: Find the equation of the line that contains point (12,-7) and perpendicular to the line whose equation is 4y-3x+9=0 Click here to see answer by richwmiller(9143)
 Question 251333: Find the equation of the line that contains point (12,-7) and perpendicular to the line whose equation is 4y-3x+9=0 Click here to see answer by solver91311(16897)

 Question 251401: Solve the problem. Joe has a collection of nickels and dimes that is worth \$6.00. If the number of dimes were doubled and the number of nickels were increased by 6, the value of the coins would be \$9.90. How many dimes does he have? Click here to see answer by richwmiller(9143)

 Question 251283: Question-1: (a): Let be the line given by the equation 3x+4y+12=0 . Find the x-intercept M and the y-intercept A of and compute the distance d between A and M. (b): Obtain the equation of the line through M perpendicular to . (c): Find two points B and C on whose distance from A is equal to . (d): Find a point D that makes ABCD a square. Question-2: Consider the circle C1 given by the equation . (a): Find the radius r and center M of C1 and determine the points A and B of intersection of C1 with the y-axis. (b): Find the point D of intersection of the tangent lines to the circle at A and B. (c): Find the equation of the circle C2 with MD as a diameter. (d) (3 marks): Obtain the parametric equations of the circle C1 . Question-3: Consider the functions f(x)=(5x-4)/(3x+4) and g(x)=ln(1/6x^2+5x-4) (a): Determine the domains of f(x) and g(x). (b): Show that f is 1-1 on its domain and obtain its inverse. (c): Write expressions for (fog)(x) and (gof)(x) (d): Solve the equation f(x).exp(-g(x))=0 Click here to see answer by richwmiller(9143)

 Question 251417: How do you turn a slope-intercept equation to a standard form? Click here to see answer by stanbon(57361)

 Question 251421: I need to find the intercepts then use them to graph the equation 3y-9=3x Click here to see answer by rfer(12660)
 Question 251421: I need to find the intercepts then use them to graph the equation 3y-9=3x Click here to see answer by stanbon(57361)

 Question 251429: What are the x- and y-intercepts of the line with equation 4x + 5y = 40? Click here to see answer by PRMath(123)

 Question 251428: Graph the linear inequality. x + 5y ≥ -1 Click here to see answer by stanbon(57361)

 Question 251432: I need to graph the equation and find the y intercept y=1/3x Click here to see answer by stanbon(57361)

 Question 251440: i need to find the slope for x+4y=8 0+4(2)=8 (0,2) Click here to see answer by richwmiller(9143)

 Question 251478: I need to solve Y=2/3x-12 to graph and y=1/2x-4 to graph. Click here to see answer by richwmiller(9143)

 Question 251495: Hi...my name is kendra and im reallly trying to pull up my grade in math...I dont really know when a problem is undefined and in seeming to always get problem like that wrong..can you please please help me Click here to see answer by stanbon(57361)

 Question 251596: y=1/2x-4 I need 5 solutions for graphing I just do not understand how to do this. Click here to see answer by richwmiller(9143)

 Question 251597: Find the slope and the y-intercept for the following equation of a line: 5x + 10 y = 20 Slope = y-intercept = Click here to see answer by rfer(12660)

 Question 251623: what is the slope of the line which contains (-3,1 1/2) and passes through the origin? Click here to see answer by padmameesala(42)

 Question 251468: How to select scale on graph while solving simultaneous linear equations of two variables. Click here to see answer by Theo(3464)

 Question 251694: What is the linear equation of the following? Recently, I took my car to the mechanic to replace the timing belt. The mechanic charges \$60 an hour on labor. If the parts cost \$100 and the total bill was \$340, how many hours of labor did the mechanic charge to replace the timing belt? AND THIS IS WHAT I HAVE SO FAR... 340-100 60 240 /60 = 4 hours Click here to see answer by richwmiller(9143)

 Question 251714: Write an equation of the line containing the given point and parallel to the given line (3,-3) 7x-2y=5 Please show me how to get the correct answer thank you Click here to see answer by richwmiller(9143)

 Question 251763: The credit remaining on a phone card (in dollars) is a linear function of the total calling time made with the card (in minutes), as shown in the figure below. The remaining credit after minutes of calls is , and the remaining credit after minutes of calls is . What is the remaining credit after minutes of calls? Click here to see answer by jim_thompson5910(28595)

 Question 251814: Solve the system of equations by graphing. Then classify the system 3x- y =28 3x + 4y =-7 a. the solution is b. there are infinitely many solutions c. there is no solution is the system consistent or inconsistent are the equations dependent or independent and graph Click here to see answer by hokies(65)

 Question 251739: A company makes three products, A, B, and C. There are 500 pounds of raw material available. Each unit of product A requires 2 pounds of raw material, each unit of product B requires 2 pounds, and each unit of product C requires 3 pounds. The assembly line has 1,000 hours of operation available. Each unit of product A requires 4 hours, while each unit of products B and C requires 5 hours. The company realizes a profit of \$500 for each unit of product A, \$600 for each unit of product B, and \$1,000 for each unit of product C. How many units of each of the three products should the company make to maximize profits? Click here to see answer by Theo(3464)

 Question 251469: what is the meaning of the term in graph like 1 cm=2 units Click here to see answer by nyc_function(2733)

 Question 251888: Life expectancies at birth for men and women can be modeled by the following functions: w(x)= 0.126x+76.74 M(x)= 0.126x+69.11 W(x) represents the life expectancy of women and M(x) represents the life expectancy of men. The x represents the years since 1975. (x=0 corresponds to the year 1975, x=5 corresponds to 1980, and so on). this goes on until 2000 x is the years since 1975. 1975 0 1985-5 1990-15 1995- 20 2000- 25 I am not understanding this I also have to figure out on a slope is the life expectantcy of men or women increasing more rapidly. then I have to determine the birth years in a inequality where the men life expectancy are greater than women Click here to see answer by jim_thompson5910(28595)

 Question 251742: Maximize z = 3x + 5y subject to the constraints x ≥ 0, y ≥ 0, y <(underlined) 8, x + y ≥ 2, 4x + y <(underlined) 12 Click here to see answer by jsmallt9(3296)

 Question 251864: Problem is: Fixed cost, \$200; 50 items cost \$2000 to produce - what is appropriate cost function? The answer is c(x) = 36x + 200 Can you please explain how they got to that answer. Thank you. Click here to see answer by tutorcecilia(2152)

 Question 251933: The consumption of cigarettes is declining. If t represents the number of years since 1985, then the consumption, C, is modeled by C=-14.25t+598.69 where C represents the number of billions of cigarettes smoked per year. Write an inequality to show the first year cigarette consumption is less than 200 billion cigarettes a year Click here to see answer by checkley77(12569)
 Question 251933: The consumption of cigarettes is declining. If t represents the number of years since 1985, then the consumption, C, is modeled by C=-14.25t+598.69 where C represents the number of billions of cigarettes smoked per year. Write an inequality to show the first year cigarette consumption is less than 200 billion cigarettes a year Click here to see answer by stanbon(57361)

 Question 251935: The sign on the elevator in a seven-story building states that the maximum weight it can carry is 1500 pounds. As part of your work-study program, you need to move a large shipment of books to the sixth floor. Each box weighs 60 pounds. Let n represent the number of boxes placed in the elevator. You weigh 185 pounds. Write an expression that represents the total weight in the elevator. Using the expression in part a, write an inequality that can be used to determine the maximum number of boxes that you can place in the elevator at one time and solve. Click here to see answer by richwmiller(9143)
 Question 251935: The sign on the elevator in a seven-story building states that the maximum weight it can carry is 1500 pounds. As part of your work-study program, you need to move a large shipment of books to the sixth floor. Each box weighs 60 pounds. Let n represent the number of boxes placed in the elevator. You weigh 185 pounds. Write an expression that represents the total weight in the elevator. Using the expression in part a, write an inequality that can be used to determine the maximum number of boxes that you can place in the elevator at one time and solve. Click here to see answer by checkley77(12569)
 Question 251935: The sign on the elevator in a seven-story building states that the maximum weight it can carry is 1500 pounds. As part of your work-study program, you need to move a large shipment of books to the sixth floor. Each box weighs 60 pounds. Let n represent the number of boxes placed in the elevator. You weigh 185 pounds. Write an expression that represents the total weight in the elevator. Using the expression in part a, write an inequality that can be used to determine the maximum number of boxes that you can place in the elevator at one time and solve. Click here to see answer by stanbon(57361)

 Question 251940: The consumption of cigarettes is declining. If t represents the number of years since 1985, then the consumption, C, is modeled by C=-14.25+598.69 where C represents the number of billions of cigarettes smoked per year. Write an inequality to show the first year cigarette consumption is less than 200 billion cigarettes a year. Solve the inequality from part a. Click here to see answer by checkley77(12569)

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