Tutors Answer Your Questions about Linear Algebra (FREE)
Question 759361: Write the equation of the line that passes through (-1, 4) with a slope of -1 in standard form.
Write the equation of the line that passes through (-1, 4) with a slope of -1 in standard form.
Write the equation of the line that passes through (2, 5) with a slope of 3 in point-slope form.
Write the equation of the line that passes through (1, 3) and (4, 4) in standard form.
Write the equation of the line that passes through (3, 6) and (0, -3) in slope-intercept form.
Write the equation of the line that passes through the points (–1, –4) and (2, 5) in point-slope form. Using complete sentences, explain whether or not it matters which point is used in the final answer. Also explain why you chose the point you did.
Click here to see answer by Alan3354(69443)   |
Question 761189: c The product of the numbers is 2 less than the lesser number. Find the lesser number.
I got x+x+4=2x+4-2...this did not calculate out to get the same answer that the back of my book has of -2 or -1. Please help! Thanks!
Click here to see answer by Cromlix(4381)  |
Question 761917: Please help me in this problem (applications in linear equations)
The bermuda triangle supposedly causes trouble for aircraft pilots.It has a perimeter of 3075 mi .The shortest side measures 75 mi less than themiddle side , and the longest side measures 375 mi more than the middle side . Find thelengths of the three sides.
Click here to see answer by Cromlix(4381) |
Question 762518: 10. Point A is the origin. Find the coordinates of the two points that are 5 units distant from A, and have x-coordinates of +3. (Hint: Make a sketch. The two points fall on the line x=5, and therefore have coordinates (5,y) where y is unknown. Use the distance formula, suitably rearranged.)Problems 11 through 13: Find the slope of the line, given points A and B on the line.
11. A(4, 6) and B(-2, -2) Answer: . Show all the solution steps in detail, using the example as a model.
12. A(3, -4) and B(5, 4)
13. A(-3,2) and B(6,0)
Click here to see answer by solver91311(24713)  |
Question 765948: I have an absolute value inequality that I have trouble with.
How do I do this with the -2? I have all other problems done, and I know what the answer is (should be true for all numbers, as the left side of the inequality is always negative), but I cannot show it mathematically. Can you please show me how to get the solution?
Click here to see answer by MaartenRU(13)  |
Question 766398: Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.
f(x) = x2 + 2x - 9
A) minimum;
B) maximum;
C) maximum;
D) minimum;
2. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.
f(x) = -x2 - 2x - 6
A) minimum;
B) minimum;
C) maximum;
D) maximum;
3. Determine whether the given quadratic function has a minimum value or maximum value. Then find the coordinates of the minimum or maximum point.
f(x) = -3x2 + 6x
A) maximum;
B) minimum;
C) minimum;
D) maximum;
4. Find the degree of the polynomial function.
f(x) = -2x + 7x2
A) 2
B) 7
C) -2
D) 1
5. Find the degree of the polynomial function.
f(x) =
A) 3
B) 0
C) -
D) 4
6. Find the degree of the polynomial function.
f(x) = πx5 - 6x4 - 9
A) 1
B) 5
C) π
D) 4
7. Find the degree of the polynomial function.
f(x) = 5x - x6 +
A) 5
B) 6
C) 1
D) -1
8. Find the degree of the polynomial function.
g(x) = -7x3 + 9
A) 0
B) -7
C) 3
D) 4
9. Find the degree of the polynomial function.
h(x) = -19x + 4
A) 1
B) 0
C) -19
D) 2
10. Find the degree of the polynomial function.
17x3 + 3x2 - 2x - 2y4 - 1
A) 17
B) 10
C) 3
D) 4
11. Find the degree of the polynomial function.
f(x) = -14x3 + 9x2 - 2
A) 6
B) 9
C) 3
D) -14
12. Find the zeros of the polynomial function.
f(x) = x3 + x2 - 42x
A) x = - 7, x = 6
B) x = 0, x = 5, x = 6
C) x = 5, x = 6
D) x = 0, x = - 7, x = 6
13. Find the zeros of the polynomial function.
f(x) = x3 + 3x2 - x - 3
A) x = - 3, x = 3
B) x = -1, x = 1, x = - 3
C) x = 9
D) x = 1, x = - 3, x = 3
14. Find the zeros of the polynomial function.
f(x) = x3 - 6x2 + 9x
A) x = 0, x = 3
B) x = 0, x = -3, x = 3
C) x = 1, x = 3
D) x = 0, x = -3
15. Find the zeros of the polynomial function.
f(x) = x3 + 4x2 - 9x - 36
A) x = -3, x = 3
B) x = 4, x = -3, x = 3
C) x = -4, x = 9
D) x = -4, x = -3, x = 3
16. Find the zeros of the polynomial function.
f(x) = 2(x + 2)(x - 4)4
A) x = 2, x = -4, x = 4
B) x = 2, x = 4
C) x = -2, x = 4
17. Find the vertical asymptotes, if any, of the graph of the rational function.
g(x) =
A) x = 0 and x = -3
B) x = 1 and x = -3
C) x = -3
D) no vertical asymptote
18. Find the vertical asymptotes, if any, of the graph of the rational function.
f(x) =
A) x = 0 and x = 1
B) x = 0 and x = -1
C) x = 1
D) no vertical asymptote
19. Find the vertical asymptotes, if any, of the graph of the rational function.
f(x) =
A) x = 4
B) x = -4
C) x = -4, x = 4
D) no vertical asymptote
20. Find the vertical asymptotes, if any, of the graph of the rational function.
g(x) =
A) x = 4, x = -4
B) x = 4
C) x = 4, x = -4, x = 0
D) no vertical asymptote
Click here to see answer by MathLover1(20849)  |
Question 766474: Can you please help me solve this :
All 28 volunteers from ms.lullas Nicaragua service trip each rent a tool to help them complete their service projects . A shovel costs $16 per day , and an electric sander costs $19 per day. Ms lulla gets a bill for $478, but it's not itemized . However, she needs to know how many of each tool they used for documentation purposes. How many shovels did the volunteers rent?
Click here to see answer by rothauserc(4718)  |
Question 767434: Question 3
Solve the quadratic equation x2 + 16x = -64 by factoring.
{2, 4}
8
{-8, 8}
-8
Question 4
Solve the quadratic equation m2+ 2m − 24 = 0 by factoring.
{- 4, 8}
{-6, 4}
{-4, 6}
{-8, 4}
Question 5
Determine the number of solutions of 2x2 + 3x = 0.
0
1 (double root)
2
3
Click here to see answer by stanbon(75887) |
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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, 3871..3915, 3916..3960, 3961..4005, 4006..4050, 4051..4095, 4096..4140, 4141..4185, 4186..4230, 4231..4275, 4276..4320, 4321..4365, 4366..4410, 4411..4455, 4456..4500, 4501..4545, 4546..4590, 4591..4635, 4636..4680, 4681..4725, 4726..4770, 4771..4815, 4816..4860, 4861..4905, 4906..4950, 4951..4995, 4996..5040, 5041..5085, 5086..5130, 5131..5175, 5176..5220, 5221..5265, 5266..5310, 5311..5355, 5356..5400, 5401..5445, 5446..5490, 5491..5535, 5536..5580, 5581..5625, 5626..5670, 5671..5715, 5716..5760
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