# 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 396487: Need help please Tell whether the ordered pair is a solution of the equation. x-2y=8; (-6, -7) Click here to see answer by rfer(12662)

 Question 396499: I do not understand this one at all and my son has 15 of these to do. Would someone mind helping me with this? write the equation in function form. Then graph the equation. y-x=-1 Click here to see answer by richard1234(5390)

 Question 396931: I'm working on the Linear Equations in my Alegbra book. I have a graph with a horizontal X line and a vertical Y line. There is a line that slopes down from left to right. My problem is asking me to find the slope, the y-intercept, and write the equation. The line intercepts the Y line at 1, then the X line at 2. I figured the slope is -1/2 since {delta y = -2} & {delta x = 4}. I believe the y-intercept is just 2, but I'm totally questioning myself on this & have no idea how to write the equation. Can you help me please? Click here to see answer by solver91311(16897)

 Question 396838: What is the answer to this my daughters teacher got 1.25 she gets 5.25 who is correct? the algebra equation is 7(x-3)+29=3(x+2)+7 Click here to see answer by ankor@dixie-net.com(15656)

 Question 396942: can you help me solve x >-1 & y <-3 Click here to see answer by MathLover1(6634)

 Question 396996: The sum of two numbers is and the difference is . What are the numbers? Click here to see answer by stanbon(57361)

 Question 396989: when graphing a logarithmic function, what does a reflection across the x-axis of that function look like? Click here to see answer by stanbon(57361)

 Question 397259: Find the vertex, the line of symmetry, and the maximum or minimum value of f(x). Graph the function. The vertex is ____. <--Type an ordered pair. The line of symmetry is x=____. The maximum/minimum value of f(x)=____. Is the value, f(-1)=5, a minimum or maximum. Graph. Click here to see answer by ewatrrr(10682)

 Question 397318: Part of the graph to a curve has equation y=x³-15/2x²+12x-18. (a) Find the coordinates of the stationary point E. (b) Find the coordinated of G. G is on the X axis so Y=0. So far I have that y=x³-15/2x²+12x-18 so dy/dx of y=x³-15/2x²+12x-18= 3²-15x+12 Now, At SP, dy/dx=0 ∴ 3x²-15x+12=0 ÷3 x²-5x+4=0 (x-4)(x-1)=0 x=4 or x=1 Sub x=4 into x³-15/2x²+12x-18 and x=1 into x³-15/2x²+12x-18 4³-15/2(4)²+12(4)-18. 1³-15/2(1)+12(1)-18 64-120+48-18. 1-15/2+12-18 =-26. =-25/2 (4,-26). (1,-25/2) Now I am compltely stuck. Can someone please help me. Click here to see answer by solver91311(16897)

 Question 397643: graph the line described by y=2[x+4]-3. include a x/y table Click here to see answer by stanbon(57361)

 Question 397828: write the equation of the line that contains the indicated pair of points. Express the final equation in standard form. (2,5),(8,12) Click here to see answer by stanbon(57361)

 Question 397826: find x if the line through (1,0)and (x,1) has a slope of 1/2. Click here to see answer by ewatrrr(10682)

 Question 397789: A. Solve -What are the solutions? x=____ B. Find the x-intercepts of -What are the x-intercepts? The x-intercepts are ____. Click here to see answer by ankor@dixie-net.com(15656)

 Question 397535: find the value of a that makes the ordered pair a solution of the equation. y=3x+7; (-3,a) 2x+4y=14; (-5,a) y=11-7x; (a,-10) 9x-5y=-9; (a-1,9) Click here to see answer by ewatrrr(10682)

 Question 397931: Find the intervals where the graph of the function f(x)=x^2-4 is above the x-axis. Click here to see answer by stanbon(57361)

 Question 397996: Sarah’s two student loans totaled \$12,000. One of her loans was at 6% simple interest and the other at 9%. After one year, Sarah owed \$855 in interest. What was the amount of each loan? I got x+y=12,00 but what is the next step???? Click here to see answer by josmiceli(9686)
 Question 397996: Sarah’s two student loans totaled \$12,000. One of her loans was at 6% simple interest and the other at 9%. After one year, Sarah owed \$855 in interest. What was the amount of each loan? I got x+y=12,00 but what is the next step???? Click here to see answer by popoff602(1)

 Question 398008: can you show me step by step cleary?? 7x-2(3+4x)=19 Click here to see answer by richard1234(5390)

 Question 397908: the graphs of the following systems are given in (a) through (d). Match each system with the correct graph. 4x+5y=-2 4y-x=11 Click here to see answer by Alan3354(30993)

 Question 398036: graph and check to solve the linear system. 3x+y=5 -x+y=-7 Click here to see answer by mananth(12270)

 Question 398203: suppope an equation of the ellipse. How to put the equation in standard form and sketch the ellipse Click here to see answer by Alan3354(30993)

 Question 398205: Sorry i just forgot to post the equation. Put the given equation of the ellipse in standard form. 9x^2+36y^2=324 Click here to see answer by robertb(4012)

 Question 398149: find the area of a rectangle if three of its corners are (-0.1, -3.4), (-7.9, -3.4, and (-0.1, 6.8) Click here to see answer by robertb(4012)

 Question 398418: How do u find order triple solution from these; 5x-y+z=24 4x+2y-3z=3 x-3y+2z=11 Click here to see answer by Alan3354(30993)
 Question 398418: How do u find order triple solution from these; 5x-y+z=24 4x+2y-3z=3 x-3y+2z=11 Click here to see answer by ewatrrr(10682)

 Question 398738: Hi my name is Liz and I need help to solve this: y=5X-2 I need to solve for X first than for Y, so I can plot at least 3 points on my graph. Thank you Click here to see answer by stanbon(57361)
 Question 398738: Hi my name is Liz and I need help to solve this: y=5X-2 I need to solve for X first than for Y, so I can plot at least 3 points on my graph. Thank you Click here to see answer by mananth(12270)

 Question 398744: How do you write an inequality of line AB that has point (4,8) and (-10,1) in standard form with integers? Click here to see answer by stanbon(57361)