Tutors Answer Your Questions about Linear-equations (FREE)
Question 567187: find the slope of the line through each pair of points, if possible, and based on the slope, indicate whether the line through the points risess from left to right, falls from left to right, is horizonal, or is vertical (-4,1)and(-3,4)and (1.5,2.6)and(0.5,(3.6)
Click here to see answer by stanbon(57346) |
Question 567977: Equation of the line perpendicular to 4x-6y=5 containing (4,2)
-6y=-4x+5
y=-4/6x+-5/6
y=2/3x-5/6
m=2/3
y=-3/2x+b
2=-3/2(4)+b
2=-12/2+b
2=-6+b
y=-3/2x+8
Find the coordinates of the point of intersection of the perpendicular lines in the problem above.
Would love to see this step by step how to solve this, as I have many more problems just like it.
Thank you so much!
Joy
Click here to see answer by KMST(1868)  |
Question 568280: The costs C and income I for making and selling T-shirts with a school logo are given by the equations C=$535+4.50n and I=$12n, where n is the number of T-shirts.
a. How many T-shirts must be bought and sold to break even? Explain. I got that the answer to this one is $72 as you cannot make 71.3 shirts.
b. Suppose only 50 shirts are sold. Is there a profit or loss. I said Loss.
C. Suppose the income is $1,200. Is there a profit or loss. I said profit.
WHERE I NEED HELP
d. i. For each equation, find the coordinates of a point that lies on the graph of the equation.
ii. What information does this point give?
iii. Describe how to use the equation to see that the point will be on the graph.
I can't remember how to put these equations on a graph.
Please help. Thank you
Click here to see answer by stanbon(57346) |
Question 568327: Help please: I have answered some already. Please correct me if I'm wrong.
Mark the following statements involving exponents as 'True' or 'False'.
1) (x+y)^-2=x^-2+y^-2 --- False
2) (a^3)(a^5)=a^15 --- True
3) (b^2)^4=b^6 --- False
4) (xy)^3=x*y^3 --- False
5) [(a^2)b^5)]^3=ab^30 -- ???
Click here to see answer by Theo(3464)  |
Question 568910: A company predicts that it will sell y units of its product if it charges x dollars for it using the formula y=300-2.5x. In whole dollars, how much should the company charge for the product if it wants to sell 175 units.
Click here to see answer by lwsshak3(6505) |
Question 569045: What is the equation of the line containing (-6, 5) and having a slope of 2/3?
I think I have the right answer out of 4 choices (I chose 2x - 3y = -27), but I'm not sure how I would have found that without trying the numbers -6 and 5 in the x and y spots of the equation.
Click here to see answer by josmiceli(9678)  |
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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, 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