# Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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 Algebra: Graphs, graphing equations and inequalities Solvers Lessons Answers archive Quiz In Depth

 Question 54478: Given a circle: (x-4)^2 + (y+5)^2 = 5, find the equation of the line (in slope-intercept form) that is tangent to this circle at the point (3,-7). Hint: use the fact that a tangent line is perpendicular to the radius of the circle at the point where they meet. Click here to see answer by josmiceli(9817)

 Question 54362: Natalie has some nickels, Dirk has some dimes, and Quincy has some quateres. Dirk has five more dimes than Qunicy had quarters. If Natalie gives Dirk a nickel, Dirk gives Qunciy a dime, and Quincy gives Natalie a quater, they will all have the same amount of money. How many coins did each have orignially? Click here to see answer by josmiceli(9817)
 Question 54362: Natalie has some nickels, Dirk has some dimes, and Quincy has some quateres. Dirk has five more dimes than Qunicy had quarters. If Natalie gives Dirk a nickel, Dirk gives Qunciy a dime, and Quincy gives Natalie a quater, they will all have the same amount of money. How many coins did each have orignially? Click here to see answer by ankor@dixie-net.com(15746)

 Question 54571: Find the x-intercept and y-intercept of the following line: (x/4) + (y/5) = 1. Click here to see answer by anjulasahay(30)

 Question 54361: Draw a line that crosses both the x and y axes. a)Find the slope and y intercept of this line b)Write the equation in slope intercept form c)Rewrite the equation in standard form d)Draw a line that is perpendicular and write its equation e)Draw a line that is perpendicuar to line in part d, write its equation f)Draw a line tha tis perpendicular to line in part e, write its equation g)What shape did you make with your graph? Click here to see answer by funmath(2925)

 Question 54631: Translate the following statements into inequalities. Let x represent the number in each case 2 times a number, increased by 28, is less than or equal to 6 times that number. Click here to see answer by stanbon(57967)

 Question 54634: solve for x please 3x - 5(3x - 7) = 2(x + 9) + 45 Click here to see answer by tutorcecilia(2152)

 Question 54646: given line1 passing through the points (-4,-1) and (-1,0) and line2 passing through the points (5,8) and (0,4) are the lines parallel, perpendicular, or neigher? Click here to see answer by tutorcecilia(2152)

 Question 54679: how do you find the y-intercept to an equation like this y=3/5x-4 Click here to see answer by stanbon(57967)

 Question 54682: Statistics. Sam must have an average of 70 or more in his summer course to obtain a grade of C. His first three test grades were 75, 63, and 68. Write an inequality representing the score that Sam must get on the last test to get a C grade. Click here to see answer by checkley71(8403)

 Question 54652: What is the equation of the line having slope -4/5 and y intercept 3 in slope-intercept form? Click here to see answer by rchill(405)

 Question 54648: Solve each of the following equations for x, and check your results 2(x -3) - 3(x + 5) = 3(x - 2) – 7 = x = -2 Click here to see answer by funmath(2925)

 Question 54836: Can someone help me on this? I need to graph the solution set of x > -7. - Thanks, Lyn Click here to see answer by funmath(2925)

 Question 54918: What is the rule for x 1 2 3 4 5 6 y-1-4-7-10-13-16 Click here to see answer by stanbon(57967)
 Question 54918: What is the rule for x 1 2 3 4 5 6 y-1-4-7-10-13-16 Click here to see answer by wgomero(28)

 Question 54865: I NEED TO GRAPH f(X)=x^3-7x I got the following points (0,0),(1,-6), (-1,6), (2,-6), (-2,6). I know it has to be "s" shape graph but it doesn't come out right, please help, i don't know what i'm doing wrong Click here to see answer by rapaljer(4667)

 Question 54960: Can someone help me do this equation? I am completely lost. This is my first one and don't know how to do it. 2x + 3y =6 Thanks, Ashley Click here to see answer by stanbon(57967)

 Question 54981: 18. Write the equation of the line passing through (–3, –7) and (–3, –6). A) x = –3 B) y = –3 C) y = x – 3 D) y = x no book. thanks!!!!! Click here to see answer by funmath(2925)

 Question 54984: Can someone help me graph this equation? The cost of producing a number of items x is given by C = mx + b, in which b is the fixed cost and m is the variable cost (the cost of producing one more item) (a) If the fixed cost is \$40 and the variable cost is \$10, I need to write the cost equation. (b) Graph the cost equation Thanks, Ashley Click here to see answer by Nate(3500)

 Question 55024: Graph Type: Hyperbola Explanation: Graph comes close to x=0 and y=-0 (asymptotes) without touching the lines What happens to y as x gets larger? What happens to x as y gets larger? d) Given a line containing the points (1,4), (2,7), and (3,10) determine the slope-intercept form of the equation, provide one additional point on this line, and graph the function. Equation in Slope-Intercept Form: Show your work here: Give one additional point in (x,y) form that would fall on this line: Click here to see answer by stanbon(57967)

 Question 55044: f(x)=x^2-3 How do I solve this problem I have tried several times and I do not think I have the right answer Click here to see answer by Nate(3500)
 Question 55044: f(x)=x^2-3 How do I solve this problem I have tried several times and I do not think I have the right answer Click here to see answer by Hook(36)

 Question 55026: What value of y is associated with the following values of x (a)x=2 (b)x=3 (c)x=-2 Click here to see answer by Hook(36)

 Question 55065: Solve the system by graphing, addition and substitution methods. 3x + y = –1, 9x + 3y = –3 Click here to see answer by rchill(405)

 Question 55066: Solve the system by graphing, addition and substitution methods. 5x – 4y = –5, x – 2y = –7 Click here to see answer by rchill(405)

 Question 55073: Joe has 37 coins (all nickels, dimes, and quarters) worth \$5.50. He has 4 more quarters than nickels. How many dimes does Joe have? Click here to see answer by stanbon(57967)

 Question 55130: I am stuck on correct answer for: The slope of the line through points (4,5) and (6, -2) is: I believe answer is -3 over 2 but I need to verify my work. What is correct resolve? Click here to see answer by psbhowmick(529)

 Question 55132: I am stuck on correct answer for: The square root of 50 = I believe answer is 25 but I need to verify my work. What is correct resolve? Click here to see answer by psbhowmick(529)

 Question 55127: Find an equation of the containing the pair of points (0,7) and (5,2). Click here to see answer by psbhowmick(529)

 Question 55147: Please Solve. –3(x + 1) = 2(x – 8) + 3 –3(x + 1) = 2(x – 8) + 3 [Use the Order of Operations to solve (PEMDAS)] -3x-3=2x-16+3 [Combine like-terms if possible] -3x-3=2x-13 [Isolate all of the terms with variables] -3x-2x=-13+3 [Combine like-terms] -5x=-10 [Solve for x] x=-10/-5 x=2 Click here to see answer by tutorcecilia(2152)

 Question 55152: 28x – 2(10x – 0.365) = 7x + 0.035 Click here to see answer by checkley71(8403)

 Question 55141: A long-distance phone call costs \$0.96 for the first minute and \$0.72 for each additional minute or portion thereof. Write an inequality representing the number of minutes a person could talk without exceeding \$6. Please, Thank you :) Click here to see answer by Hook(36)

 Question 55151: Solve and graph the solution set. 3x > or = 7x + 20 Click here to see answer by funmath(2925)

 Question 55187: what would -1/4 look like on a graph Click here to see answer by stanbon(57967)