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

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Question 944982: Which test point holds true for y − 2x ≤ 1?
(0, 2)
(-2, 4)
(1, 4)
(5, 0)

Click here to see answer by josgarithmetic(39617)

Question 945063: Craig and Leticia go to the store together to buy tomatoes to make salsa. Together they paid 14.62 dollars for tomatoes and peppers. Craig paid 2.38 dollars more for his tomatoes and peppers than leticia paid for hers . Craig's recipe calls for 10 tomatoes and 6 peppers. Leticia's recipe calls for 8 tomatoes and 4 peppers.
How much does a tomatoe and pepper cost?

Click here to see answer by josgarithmetic(39617)

Question 945142: Solve the system using substitution.

y = 2x + 7
y = 5x + 4
Click here to see answer by MathLover1(20849)

Question 945147: Solve the system using substitution.

y = x + 4
y = 3x
Click here to see answer by MathLover1(20849)

Question 945146: Solve the system using substitution.

y = 1/3x + 10
x = 3y + 6
Click here to see answer by Alan3354(69443)

Question 945145: Solve the system using substitution.

2x + 5y = -6
4x + y = -12
Click here to see answer by Alan3354(69443)

Question 945162: Graphing Linear equations
3x+y=3
Click here to see answer by macston(5194)

Question 945191: Solve each system by graphing. Write no solution or infinitely many solutions where appropriate. Make sure to show your graph and also show your check verifying that your answer is correct.
Y = x
2x + y = 3/2

Click here to see answer by MathLover1(20849)

Question 945187: Solve each system by graphing. Write no solution or infinitely many solutions where appropriate. Make sure to show your graph and also show your check verifying that your answer is correct.
Y = -x + 2
3x + 3y = 12

Click here to see answer by Fombitz(32388)

Question 945344:
Looking at the graph of y = x^2 -13 x + 30, solve the inequality x^2 -13 x + 30 > 0. Express your answer using interval notation.
x:
Click here to see answer by josgarithmetic(39617)

Question 945344:
Looking at the graph of y = x^2 -13 x + 30, solve the inequality x^2 -13 x + 30 > 0. Express your answer using interval notation.
x:
Click here to see answer by MathTherapy(10551)

Question 945425: Solve by elimination.

2x + y = 3
-2x + y = 1
Click here to see answer by Fombitz(32388)

Question 945427: Solve the system using elimination.

8x - 6y = -122
-4x + 6y = 94
Click here to see answer by Alan3354(69443)

Question 945463: Solve the system using elimination.

2x + 9y = 36
2x - y = 16
Click here to see answer by MathLover1(20849)

Question 945461: Solve the system using elimination.

8x - 6y = -122
-4x + 6y = 94
Click here to see answer by MathLover1(20849)

Question 945460: Solve the system using elimination.

7x - 9y = -57
-7x + 10y = 68
Click here to see answer by Fombitz(32388)

Question 945459: Solve the system using elimination.

x + 6y = 48
-x + y = 8
Click here to see answer by Fombitz(32388)

Question 945428: Solve the system using elimination.

2x + 9y = 36
2x - y = 16
Click here to see answer by Alan3354(69443)

Question 945423: Solve the system using elimination.

x + 6y = 48
-x + y = 8
Click here to see answer by Alan3354(69443)

Question 945426: Solve the system using elimination.

7x - 9y = -57
-7x + 10y = 68
Click here to see answer by Alan3354(69443)

Question 945522: Evaluate the functions when x = -2, 0, and 3
1)f(x) = -0.75x - 1
2)d(x) = -3/2x + 5
Click here to see answer by Alan3354(69443)

Question 945559: How do I find the total profit of two months when there total profit is 689,00 but one month had 12% more profit?
Click here to see answer by rfer(16322)

Question 945642: To graph the function f, we plot the points (x, f( ) ) in a coordinate plane. To graph f(x) = x^2 + 5,we plot the points ( x, ) So the point (2, ) is on the graph of f. The height of the graph of f above the x-axis when x = 2 is ( ) ?.
Click here to see answer by josgarithmetic(39617)

Question 945719: Graph y=-5/3x+3 and y=1/3x-3
Click here to see answer by MathLover1(20849)

Question 945874: Find the particular antiderivative that satisfies the following conditions:
f''(x) = 12 x^3 - 2; \quad f(0) = 4, \quad f'(0) = -2

Click here to see answer by Alan3354(69443)

Question 946024: My daughter is needing help with Algebra. She is in the 8th Grade and in a Honors Algebra class. The question she is stuck on is: Which equation models a line with the same y-intercept but half the slope of the line y=6-8x?
A. y=-4x+3
B. y=6-4x
C. y=3-8x
D. y=-16x+6
Click here to see answer by KMST(5328)

Question 946043: What is the equation for the line is perpendicular to y+1=2(x+4) and passes through (-6,12)
Click here to see answer by josgarithmetic(39617)

Question 946046: Find an equation of the line with the given slope and y-intercept.
Slope = -5, y-intercept = (0, -7)

Click here to see answer by brysca(112)

Question 946045: y= 2x+5
y= x^2+ 4x- 10
Part A: Solve the system of equations above algebraically. Show your work.
Part B: Graph both equations and indicate the solution on the graph.
Click here to see answer by josgarithmetic(39617)

Question 946186: if f(x) =-3 what is x?
The equation is 4x^2-x+3=-3.
Click here to see answer by josgarithmetic(39617)

Question 946226: Graph the equation y=4x+6
Click here to see answer by Fombitz(32388)

Question 946287: What is the equation for the line is perpendicular to 7x + 8y = 2 and passes through (4,2)
Click here to see answer by stanbon(75887)

Question 946319: I want to know step by step on how to do this problem. The directions are find the slope- intercept form of the equations described. the problem is Write an equation for the line parallel to 5x=7+y and through the point (-1,-3)graph both lines
Click here to see answer by josgarithmetic(39617)

Question 946295: What is the equation for the line is perpendicular to 7x + 8y = 2 and passes through (4,2).
Click here to see answer by josgarithmetic(39617)

Question 946295: What is the equation for the line is perpendicular to 7x + 8y = 2 and passes through (4,2).
Click here to see answer by MathLover1(20849)

Question 946390: I am given the equation f(x)=300x-11x squared +2. I am asked to find the maximum. Normally the homework problems show step by step instruction although this one isn't. Can you please help we with this
Click here to see answer by josgarithmetic(39617)

Question 946496: I need help. There are 12 elements in the intersection of sets A and B, and there are 20 elements in the union of sets A and B. If set A has 4 fewer elements than set B, find the number of elements that are in set B, but not set A. Thanks.
Click here to see answer by Theo(13342)

Question 946537: Sketch the graph:f*(x)= -x^3-3*x^2-3*x-2
Click here to see answer by Fombitz(32388)

Question 946641: x^2-6x+9
Click here to see answer by Alan3354(69443)

Question 946878: Without graphing, decide whether the system has one solution, no solution, or an infinite number of solutions. Make sure to explain your answer for credit.

y = -3x + 1
y = 3x + 7
Click here to see answer by MathLover1(20849)

Question 946882: Solve the system using elimination. Make sure to show/explain your work for credit.

4x + 3y = 24
4x - 3y = -24
Click here to see answer by Fombitz(32388)

Question 946852: Find the point in the first quadrant at which the graph of the quadratic function
f(x) = 3 x2 − 4
intersects the graph of the linear function
g(x) = 3 x + 14

Click here to see answer by Fombitz(32388)

Question 946884: Which ordered pair is the solution of the system?

6x - 6y = 2
3x + 9y = -7
Click here to see answer by Alan3354(69443)

Older solutions: 1..45, 46..90, 91..135, 136..180, 181..225, 226..270, 271..315, 316..360, 361..405, 406..450, 451..495, 496..540, 541..585, 586..630, 631..675, 676..720, 721..765, 766..810, 811..855, 856..900, 901..945, 946..990, 991..1035, 1036..1080, 1081..1125, 1126..1170, 1171..1215, 1216..1260, 1261..1305, 1306..1350, 1351..1395, 1396..1440, 1441..1485, 1486..1530, 1531..1575, 1576..1620, 1621..1665, 1666..1710, 1711..1755, 1756..1800, 1801..1845, 1846..1890, 1891..1935, 1936..1980, 1981..2025, 2026..2070, 2071..2115, 2116..2160, 2161..2205, 2206..2250, 2251..2295, 2296..2340, 2341..2385, 2386..2430, 2431..2475, 2476..2520, 2521..2565, 2566..2610, 2611..2655, 2656..2700, 2701..2745, 2746..2790, 2791..2835, 2836..2880, 2881..2925, 2926..2970, 2971..3015, 3016..3060, 3061..3105, 3106..3150, 3151..3195, 3196..3240, 3241..3285, 3286..3330, 3331..3375, 3376..3420, 3421..3465, 3466..3510, 3511..3555, 3556..3600, 3601..3645, 3646..3690, 3691..3735, 3736..3780, 3781..3825, 3826..3870, 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20746..20790, 20791..20835, 20836..20880, 20881..20925, 20926..20970, 20971..21015, 21016..21060, 21061..21105, 21106..21150, 21151..21195, 21196..21240, 21241..21285, 21286..21330, 21331..21375, 21376..21420, 21421..21465, 21466..21510, 21511..21555, 21556..21600, 21601..21645, 21646..21690, 21691..21735, 21736..21780, 21781..21825, 21826..21870, 21871..21915, 21916..21960, 21961..22005, 22006..22050, 22051..22095, 22096..22140, 22141..22185, 22186..22230, 22231..22275, 22276..22320, 22321..22365, 22366..22410, 22411..22455, 22456..22500, 22501..22545, 22546..22590, 22591..22635, 22636..22680, 22681..22725, 22726..22770, 22771..22815, 22816..22860, 22861..22905, 22906..22950, 22951..22995, 22996..23040, 23041..23085, 23086..23130, 23131..23175, 23176..23220, 23221..23265, 23266..23310, 23311..23355, 23356..23400, 23401..23445, 23446..23490, 23491..23535, 23536..23580, 23581..23625, 23626..23670, 23671..23715, 23716..23760, 23761..23805, 23806..23850, 23851..23895, 23896..23940, 23941..23985, 23986..24030, 24031..24075, 24076..24120, 24121..24165, 24166..24210, 24211..24255, 24256..24300, 24301..24345, 24346..24390, 24391..24435, 24436..24480, 24481..24525, 24526..24570, 24571..24615, 24616..24660, 24661..24705, 24706..24750, 24751..24795, 24796..24840, 24841..24885, 24886..24930, 24931..24975