# 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 110718: Need help with this problem please. Find the equation of the line that contains the point (-2,-1) and has slope -1/2. I tried to work the problem but haven't gotten the correct answer. m=-1/2 (y1,x1)= (-2,-1) y-y1=m(x-x1) y-(-1)=-1/2(x-(-2)) y-(-1)=-1/2x+(-3) y=-1/2x+2 Click here to see answer by ankor@dixie-net.com(15660)

 Question 110730: Determine whether the line through p1 (1,-2) and p2(4,-3) is parallel to the line through q1 (4,3) and q2 (7,4) Click here to see answer by jim_thompson5910(28598)

 Question 110733: Find the equation of the line that contains the point (1,-2) and is perpendicular to the line y=-3/4x+2 Click here to see answer by stanbon(57387)

 Question 110728: The cost of a rental car is \$24 per day plus 10 cents per mile. Write a linear equation to describe the cost of renting a car for one day in terms of the number of miles driven. Click here to see answer by stanbon(57387)

 Question 110717: Find the x- and y- intercepts: 4x-2y=12 This is how I worked the problem but don't think I did something right. 4x-2y=12 4x-2y=12 4x-2(0)=12 4(0)-2y=12 4x=12 2y=12 x=2 y=-4 (2,0) (0,-4) Click here to see answer by stanbon(57387)

 Question 110758: The equation y = 10x - 50 describes the amount of money a class of students might earn from candy bar sales. What are the slope and y-intercept of this line? Thank you. Click here to see answer by stanbon(57387)

 Question 110757: Write the equation of the line passing through (3, -3) and (3,-6) Which is the ordered pairs (0,0) (-2, 10), (-1,-5), (-3,9) are solutions for the equation y=5x? Click here to see answer by jim_thompson5910(28598)

 Question 110749: Solve the system by the substitution method. x - 5y = 13 -2x - 2y = -2 Thank you. Click here to see answer by scott8148(6628)

 Question 110759: WRite the equation of the line passing through (4,-25) and (-3, 17). Thank you. Click here to see answer by stanbon(57387)
 Question 110759: WRite the equation of the line passing through (4,-25) and (-3, 17). Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 110755: Derive the equation of the line that passes through point (4, -16) with a slope of -3. Click here to see answer by scott8148(6628)
 Question 110755: Derive the equation of the line that passes through point (4, -16) with a slope of -3. Click here to see answer by jim_thompson5910(28598)

 Question 110752: Solve the system by graphing. 2x + 4y = 2 x + 2y = 1 Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 110753: Adult tickets for a play cost \$14 and child tickets cost \$4. If there were 28 people at a performance and the theater collected \$242 from ticket sales, how many children attended the play? Solve this problem using algebraic equations. Thank you. Click here to see answer by scott8148(6628)
 Question 110753: Adult tickets for a play cost \$14 and child tickets cost \$4. If there were 28 people at a performance and the theater collected \$242 from ticket sales, how many children attended the play? Solve this problem using algebraic equations. Thank you. Click here to see answer by stanbon(57387)

 Question 110750: Graph f(x) = 3x + 2 Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 110748: Graph the inequality (in an (x,y) coordinate system) x equal to or less than 4 Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 110747: Graph f(x) = 4x + 1 Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 110765: Solve the system by substitution. x - 5y = 2 2x + 3y = 17 Click here to see answer by jim_thompson5910(28598)

 Question 110756: A small company produces both bouquets and wreaths of dried flowers. The bouquets take 1 hr of labor to produce and the wreaths take 2 hrs. The labor available is limited to 80 hrs per wk and the total production capacity is 60 items per week. Write a system of inequalities representing this situation, where x is the number of bouquets and y is the number of wreaths. Then graph the system of inequalities. Thank you. Click here to see answer by josmiceli(9697)

 Question 110746: A small company produces both standard and deluxe playhouses. The standard playhouses take 12 hrs of labor to produce and the deluxe playhouses take 20 hrs. The labor available is limited to 800 hrs per week, and the total production capacity is 50 items per week. Existing orders require the company to produce at least 10 standard playhouses & 15 deluxe playhouses per week. Write a system of inequalities representing this situation, where x is the number of standard playhouses and y is the number of deluxe playhouses. Then graph the system of inequalities Thank you! Click here to see answer by josmiceli(9697)

 Question 110776: Bob's salary from 2002-2005. he was hired in2002; therefore t=0 repesents 2002 50000 48000 46000 44000 42000 40000 0 1 2 3 4 This the graph format dollars 40000,42000 etc. 0,1,2,3,4 years. the question is list the coordinates of any two points on the graph in (x,y ) form Find the slope and show work Find the equation of this line in slope-intercept form show and explain work If Bob's salary trend continued, what would his salary be for 2008 show or explain work The line starts at 41000 to about 48500 points are at 41000,43000,46000,48500 Hope you can help me with this question and I hope I provided enough information. Thank you so much. Click here to see answer by stanbon(57387)

 Question 110766: Solve. The length of a rectangle is 8 in. more than twice its width. If the perimeter of the rectangle is 34 in., find the width of the rectangle. Click here to see answer by scott8148(6628)

 Question 110800: I need help with: Solving Linear Equations with variables on both sides. Ex: 4x + 27 = 3x 8 - 9t = 21t - 17 Solving Decimal Equations: Ex: 12.67 + 42.35 = 5.34x 26.58 7.45x - 8.81 = 5.29 + 9.47x Formulas and Functions: (Directions from book: Rewrite the equation so that 'y' is a function of 'x'.) Ex: 2x + y = 5 3(x - 2y) = -12(x + 2y) Please help. Add me on msn for more personal, one-on-one help. kels_5566@hotmail.com Click here to see answer by jim_thompson5910(28598)

 Question 110814: How do I solve this problem Determine if the function is one-to-one. If the function is one-to-one, find a formula for the inverse. f(x)=(x+5)to the 3rd. Click here to see answer by stanbon(57387)

 Question 110857: Find the x and y- intercepts, if they exist. -4x + 8y =12 Click here to see answer by jim_thompson5910(28598)

 Question 110860: Find the x and y-intercepts, if they exist. y= 8x Click here to see answer by scott8148(6628)
 Question 110860: Find the x and y-intercepts, if they exist. y= 8x Click here to see answer by bucky(2189)

 Question 110859: Find the x and y-intercepts, is they exist. 6y=-24. Click here to see answer by scott8148(6628)

 Question 110870: Find the slope of any line parallel to the line through points (19, 7) and (4, 8). Click here to see answer by jim_thompson5910(28598)

 Question 110868: Write the equation of the line that passes through point (0, 3) with a slope of negative seven over 2. Thank you. Click here to see answer by jim_thompson5910(28598)

 Question 110869: One day, the temperature at 11:00 A.M. was 44°F, and by 4:00 P.M. the temperature was 54°F. What was the hourly rate of temperature change? Thank you! Click here to see answer by bucky(2189)

 Question 110867: A small company produces both doll houses and sets of doll furniture. The doll houses take 3 hours of labor to produce, and the furniture sets take 8 hours. The labor available is limited to 400 hours per week, and the total production capacity is 100 items per week. Existing orders require that at least 20 doll houses and 10 sets of furniture be produced per week. Write a system of inequalities representing this situation, where x is the number of doll houses and y is the number of furniture sets. Thank you. Click here to see answer by ankor@dixie-net.com(15660)

 Question 110910: Translate to an algebra statment: do not solve Three times the sum of a number and seven yields the same result as the twice the same number decreased by four. Click here to see answer by Earlsdon(6287)

 Question 110897: Help ME please!!!! f(x)=-x(cubed)+2x(squared)-7x+9 find (a)f(-2), (b)f(0), and (c)f(2) I appreciate the help Heather Click here to see answer by jim_thompson5910(28598)

 Question 110983: A. 5x + 6y =18 for y When graphed this equation would be a line. By examining your answer to part a, what is the slope and y-intercept of this line? Click here to see answer by stanbon(57387)

 Question 110982: these are suppose to be fractions but i did not know how to put them in. 1/3x + 3/4x = 13 the one third and the three fourths are fractions. thanks for the help. Click here to see answer by stanbon(57387)

 Question 110893: Use the point slope formula to write an equation of a line that passes through (-6,7) and is parallel to the line 4x - y = 0. Click here to see answer by elima(1433)