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 73813: Write the equation of the line that passes through point (0, –9) with a slope of 6. (A)y = –9x + 6(B)–9x + 6y = 0 (C)y = 6x – 9 (D)6y = –9 Click here to see answer by funmath(2925)

 Question 73820: What is the definition of Difference Quotient and how do you arrive at an answer when you have f(x)=x^2+3x and DO= ((f(x+h)-f(x))/h Click here to see answer by Edwin McCravy(8909)

 Question 73834: What should I do to make a linear equation change to its standard form? what should I do if the slope and the y intercept is on the left side?? like this question : -2x +10=2y ? should I divide everything by -2?? Click here to see answer by stanbon(57361)

 Question 73831: Please Help The length of a rectangle is 2 in. more than twice its width. If the perimeter of the rectangle is 52 in., find the width of the rectangle. Click here to see answer by checkley75(3666)

 Question 73830: Please help me , thanks One day, the temperature at 2:00 A.M. was 43°F, and by 3:00 P.M. the temperature was 56°F. What was the hourly rate of temperature change? Click here to see answer by checkley75(3666)

 Question 73868: I sent this one before but I have not received a response. Please help. Business and finance. In planning for a new item, a manufacturer assumes that the number of items produced x and the cost in dollars C of producing these items are related by a linear equation. Projections are that 100 items will cost \$10,000 to produce and that 300 items will cost \$22,000 to produce. Find the equation that relates C and x. Click here to see answer by jim_thompson5910(28595)

 Question 73873: ) For a fixed rate, a fixed principal amount, and a fixed compounding cycle, the return is an exponential function of time. Using the formula, A= P1+r/n)^nt , let r = 10%, P = 1, and n = 1 and give the coordinates (t, A) for the points where t = 0, 1, 2, 3, 4. Round your answer to the hundredth's place. a) Show coordinates in this space Show work in this space b) Show graph here Click here to see answer by bucky(2189)

 Question 73891: how do i perform the indication operation of (-11),(-4) will the answer be 44? Click here to see answer by checkley75(3666)

 Question 73892: how do i solve the following equation for x: 2 - 4(3x + 1) = 8 - 7x Click here to see answer by checkley75(3666)
 Question 73892: how do i solve the following equation for x: 2 - 4(3x + 1) = 8 - 7x Click here to see answer by stanbon(57361)

 Question 73894: One number is 4 less than 3 times another. If the sum of the numbers is 36, what are the two numbers Click here to see answer by checkley75(3666)
 Question 73894: One number is 4 less than 3 times another. If the sum of the numbers is 36, what are the two numbers Click here to see answer by stanbon(57361)

 Question 73898: If the reciprocal of 4 times a number is subtracted from the reciprocal of that number, the result is 1/12. What is the number? can it be 6 Click here to see answer by Earlsdon(6287)

 Question 73896: Which of these numbers are prime? 0,1,15,19,23,31,49,55,59,87,91,97,103,105 would it be 19,23,31,59,97,103 Click here to see answer by Earlsdon(6287)

 Question 73895: Evaluate the expressions if x = -2, y = 5, and z = -2: -5(-3y - 2z) Click here to see answer by bucky(2189)

 Question 73906: Please help me, thanks An employee who produces x units per hour earns an hourly wage of y = 0.55x + 8 (in dollars). Find the hourly wage for an employee who produces 9 units per hour. Click here to see answer by checkley75(3666)

 Question 73904: Please help Are the following lines parallel, perpendicular, or neither? L1 with equation x – 2y = 10 L2 with equation 2x + y = 2 Click here to see answer by checkley75(3666)

 Question 73902: Thanks for helping Graph f(x) = –2x + 4. Click here to see answer by bucky(2189)

 Question 73901: what are the greatest common factor (GCF) for the numbers 36 and 84 Click here to see answer by checkley75(3666)

 Question 73929: Written Exercises#6,14,30,38 Pgs.386-387 6.Draw the graph of the linear function n(x)=0 14.For the function f(x)= 4x-x^2 find the coordinates of the vertx, graph the equation 30. For the equation y= 6+6x-1/3x^2 find the vertex and the axis of symmetry 38. For the function f(x) = x^2-8x+15 find f(0) Click here to see answer by rmromero(383)

 Question 73957: Write the equation, in standard form, that passes through (7,2) and (-1,6). Click here to see answer by checkley75(3666)

 Question 73964: IF POINTS A,B,AND C LIE ON A CORDINATE LINE AND POINTS A AND B HAVE COORDINATES 15 AND 7 RESPECTIVELY, THEN WHICH OF THE POSSIBLE COORDINATES FOR POINTS C SATISFY(IES) d(A,C) Click here to see answer by stanbon(57361)

 Question 73963: IF f(x)=x(x+1)(x-4), USE INTERVAL NOTATION TO GIVE ALL VALUES OF x WHERE f(x)>0. Click here to see answer by stanbon(57361)

 Question 73976: Hi, I'm working on Systems of Equations and I'm trying to solve this problem: 2x+3y=5 y=x I have to turn the equation into "y=" form, but I keep getting a fraction I was wondering if you could possibly help me. I would appreciate it. Click here to see answer by jim_thompson5910(28595)

 Question 73773: Can you explain the step-by-step ways to solve a slope problem on graphing intercepts Click here to see answer by ffc_01(9)

 Question 73978: Please graph for me please Solve the system by graphing. 3x – y = 1 3x – y = 2 Click here to see answer by checkley75(3666)

 Question 73979: Plese help me solve and graph, Thanks A home-based company produces both hand-knitted scarves and sweaters. The scarves take 2 hours of labor to produce, and the sweaters take 14 hours. The labor available is limited to 40 hours per week, and the total production capacity is 5 items per week. Write a system of inequalities representing this situation, where x is the number of scarves and y is the number of sweaters. Then graph the system of inequalities.ase help me, thanks Click here to see answer by ankor@dixie-net.com(15656)

 Question 73995: Find the midpoint of the line segment PQ for P(2, -2), Q(3, 4) If M (6, 1) is the midpoint of segment PQ and the coordinates of Q are (2, -2), find the coordinates of P. 3) Verify that (-1, 3) is a solution to y = (-1/2)x + (5/2) 4)Solve the inequality and write the solution set in interval notation: 5(2+X)>-4(X+3) Click here to see answer by stanbon(57361)

 Question 74095: I need to solve by graphing and use the equation to check. Here is the problem: y=x+1 y=3x-7 We can't get the right answer to fit into the problem. The line doesn't plot right. Thank you very much!! Click here to see answer by checkley75(3666)

 Question 74108: 1.solve the system by addition. -2x+3y=-15 x-2y=11 I got -x+y=-4 that doesn't seem right. 2.The difference of two numbers is 27. The second is 1 less than 3 times the first. What are the two numbers? 3.solve the following system of linear inequalities by graphing. 3x+4y is less than or equal to 12 x+3y is less than or equal to 6 x is greater than or equal to 0 y is greater than or equal to 0 Sorry, i'm not sure how to show the lees than and greater than symbols. I'd appreciate any help you could give me Click here to see answer by jim_thompson5910(28595)

 Question 74049: Find the slope of the line y =3 Click here to see answer by bucky(2189)