Questions on Algebra: Linear Equations, Graphs, Slope answered by real tutors!

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Question 1117380: [(sqrt(3+sqrt5)) - (sqrt(3-sqrt5))]^2 = 2
Click here to see answer by stanbon(75887)

Question 1117380: [(sqrt(3+sqrt5)) - (sqrt(3-sqrt5))]^2 = 2
Click here to see answer by solver91311(24713)

Question 1117383: 2sqrt6 - sqrt2= sqrt(a-bsqrt3)
Click here to see answer by greenestamps(13200)

Question 1116870: In 1980, the population of a city was 5.5 million. By 1992 the population had grown to 8.0 million. Type the rate at which the population of the city was growing as an integer or reduced fraction
Click here to see answer by rothauserc(4718)

Question 1117437: The table represents the total cost an online store charges for streaming movies. It charges an annual membership fee and a fee for each movie streamed.
Movies Streamed- 0,1,2,3
Total Cost- 52,55.40,58.80,62.20
A local rental store uses the function C=4.60m to determine how much to charge for movie rentals. C is the total cost and m is the number of movies rented. The store does not charge customers a membership fee. If 50 movies are rented in a year, which option is cheaper?
Click here to see answer by solver91311(24713)

Question 1117466: At which point would the equations intersection on a chart. 3x-4y=#2. -6x+5y=7
Click here to see answer by Fombitz(32388)

Question 1117481: Provide an equation for a line parallel to the line given by y=9x-3.

Click here to see answer by josgarithmetic(39617)

Question 1117481: Provide an equation for a line parallel to the line given by y=9x-3.

Click here to see answer by stanbon(75887)

Question 1117481: Provide an equation for a line parallel to the line given by y=9x-3.

Click here to see answer by solver91311(24713)

Question 1117498: please help me sketch the graph for and what is the range ,please show all working.
Click here to see answer by rothauserc(4718)

Question 1117498: please help me sketch the graph for and what is the range ,please show all working.
Click here to see answer by greenestamps(13200)

Question 1117537: find the gradients of a lines joining (5,-4) and (3,-2) pairs of point
Click here to see answer by stanbon(75887)

Question 1117540: Complete each ordered pair so that it is a solution of the given linear equation.
x-4y=-7; ( ,5), (-15, )
Click here to see answer by MathLover1(20849)

Question 1117730: Find the Point-Slope equation of the line containing the given point and having the given slope. (6, -2), m = -3

Click here to see answer by Alan3354(69443)

Question 1117766: The lines x=2 and y=-7 interest at R while the lines x=-1 and y=4 interest at S find the gradient of the line RS
Click here to see answer by Alan3354(69443)

Question 1117763: The perpendicular sides of a right-angles triangle have lengths in the ratio 3:4. The perimeter of the triangles is 168cm. Find the lengths of the sides.
Click here to see answer by Alan3354(69443)

Question 1117822: Write the equation of a line whose slope is -2 and passes through (-1,6). Write the answer in slope-intercept form.
Click here to see answer by solver91311(24713)

Question 1117827: A publisher estimates that in the first 8 weeks on sale, the total
number sold of the latest blockbuster game can be modelled by the
exponential equation
s = 86 * 3^t;
where s is the number of sales to date, and t is the time on sale in
weeks, 1 less than or equal to t is less than or equal to 8. So by the end of the first week (t = 1), 258 games
have been sold.
Write down the value of the scale factor for the exponential model.
Use this to find the percentage increase in the number of games
being sold each week.
Click here to see answer by josgarithmetic(39617)

Question 1117858: On friday a local hamburger shop sold a combined total of 231 hamburgers and cheeseburgers. The number of cheeseburgers sold was two
times the number of hamburgers sold. How many hamburgers were sold on friday?
Click here to see answer by ikleyn(52781)

Question 1118019: slope=1/2 and y-intercept is -3
Click here to see answer by Alan3354(69443)

Question 1118019: slope=1/2 and y-intercept is -3
Click here to see answer by josgarithmetic(39617)

Question 1118176: If x^2+x-1=0 what is the value of x^4+(1/x^4)?
Click here to see answer by ikleyn(52781)

Question 1118219: West of Albuquerque, New Mexico, Route 40 eastbound is straight and makes a steep descent towards the city, The highway has a 6% grade which means that its slope is -6/100. Driving on this road you notice from elevation signs that you have descended a distance of 100 ft. What is the change in our horizontal distance?
Click here to see answer by Boreal(15235)

Question 1118233: find the point of intersection of the pair of straight lines.
y= -7x minus 4
-y= 8x +6
x,y=

Click here to see answer by Alan3354(69443)

Question 1118233: find the point of intersection of the pair of straight lines.
y= -7x minus 4
-y= 8x +6
x,y=

Click here to see answer by josgarithmetic(39617)

Question 1118233: find the point of intersection of the pair of straight lines.
y= -7x minus 4
-y= 8x +6
x,y=

Click here to see answer by MathTherapy(10552)

Question 1118276: Choose the equation of the line that has a slope of 2/3 and y-intercept of -4.
Click here to see answer by josgarithmetic(39617)

Question 1118345: Find y if x is 2

Click here to see answer by josgarithmetic(39617)

Question 1118390: Write the equation of the line that contains the point (8, �3) and is perpendicular to 4x-3y=10

Click here to see answer by josmiceli(19441)

Question 1118375: Find the equation of the parabola that concaves down in the form of y = a(x-h)^2 + k, given that the vertex is (-3,35) and a point on the parabola is (-5,23).
Click here to see answer by josgarithmetic(39617)

Question 1118460: work out the equation of a line which has agradient of -2 which pass through (1,7)
Click here to see answer by josgarithmetic(39617)

Question 1118544: Measuring the speed of sound in the ocean is an important part of marine research. One application is the study of climate change. The speed of sound depends on the temperature, salinity, and depth below the surface. For a fixed temperature of 25 degrees Celsius and salinity of 35 parts per thousand, the speed of sound is a function of the depth. At the surface, the speed of sound is 1534 meters per second. For each increase in depth by 1 kilometer, the speed of sound increases by 17 meters per second.
What increase in the speed of sound is caused by a 9-kilometer increase in depth?
Click here to see answer by ikleyn(52781)

Question 1118561: Write an equation in point-slope form of the having the given slope that contains the given point m=-3,(-2,1)
Click here to see answer by Alan3354(69443)

Question 1118577: Which is the equation of a line that has a slope of -2/3 and passes through point (-3,-1)?
Click here to see answer by ikleyn(52781)

Question 1118608: Hi, I have a question here that I don't understand, could you give me the step by step problem solving method
"What is the slope of the segment shown for a staircase with 10 inch treads and 7.75 inch rises? As you walk up or down the stairs, your vertical distance from the floor is a linear function of your horizontal distance from the point on the floor where you started. Is the function discrete or continuous? Explain."
Thansk!
Click here to see answer by Alan3354(69443)

Question 1118580: A line has a y-intercept 1/2 and is perpendicular to x/5+y/10 = 1. Find it�s equation in standard form.
Click here to see answer by josgarithmetic(39617)

Question 1118580: A line has a y-intercept 1/2 and is perpendicular to x/5+y/10 = 1. Find it�s equation in standard form.
Click here to see answer by Alan3354(69443)

Question 1118579: A line passes through (-1,-13) and (1,3). Find the equation of this line in intercept form.
Click here to see answer by josgarithmetic(39617)

Question 1118579: A line passes through (-1,-13) and (1,3). Find the equation of this line in intercept form.
Click here to see answer by Alan3354(69443)

Question 1118579: A line passes through (-1,-13) and (1,3). Find the equation of this line in intercept form.
Click here to see answer by ikleyn(52781)

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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11161..11205, 11206..11250, 11251..11295, 11296..11340, 11341..11385, 11386..11430, 11431..11475, 11476..11520, 11521..11565, 11566..11610, 11611..11655, 11656..11700, 11701..11745, 11746..11790, 11791..11835, 11836..11880, 11881..11925, 11926..11970, 11971..12015, 12016..12060, 12061..12105, 12106..12150, 12151..12195, 12196..12240, 12241..12285, 12286..12330, 12331..12375, 12376..12420, 12421..12465, 12466..12510, 12511..12555, 12556..12600, 12601..12645, 12646..12690, 12691..12735, 12736..12780, 12781..12825, 12826..12870, 12871..12915, 12916..12960, 12961..13005, 13006..13050, 13051..13095, 13096..13140, 13141..13185, 13186..13230, 13231..13275, 13276..13320, 13321..13365, 13366..13410, 13411..13455, 13456..13500, 13501..13545, 13546..13590, 13591..13635, 13636..13680, 13681..13725, 13726..13770, 13771..13815, 13816..13860, 13861..13905, 13906..13950, 13951..13995, 13996..14040, 14041..14085, 14086..14130, 14131..14175, 14176..14220, 14221..14265, 14266..14310, 14311..14355, 14356..14400, 14401..14445, 14446..14490, 14491..14535, 14536..14580, 14581..14625, 14626..14670, 14671..14715, 14716..14760, 14761..14805, 14806..14850, 14851..14895, 14896..14940, 14941..14985, 14986..15030, 15031..15075, 15076..15120, 15121..15165, 15166..15210, 15211..15255, 15256..15300, 15301..15345, 15346..15390, 15391..15435, 15436..15480, 15481..15525, 15526..15570, 15571..15615, 15616..15660, 15661..15705, 15706..15750, 15751..15795, 15796..15840, 15841..15885, 15886..15930, 15931..15975, 15976..16020, 16021..16065, 16066..16110, 16111..16155, 16156..16200, 16201..16245, 16246..16290, 16291..16335, 16336..16380, 16381..16425, 16426..16470, 16471..16515, 16516..16560, 16561..16605, 16606..16650, 16651..16695, 16696..16740, 16741..16785, 16786..16830, 16831..16875, 16876..16920, 16921..16965, 16966..17010, 17011..17055, 17056..17100, 17101..17145, 17146..17190, 17191..17235, 17236..17280, 17281..17325, 17326..17370, 17371..17415, 17416..17460, 17461..17505, 17506..17550, 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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, 24976..25020, 25021..25065, 25066..25110, 25111..25155, 25156..25200, 25201..25245, 25246..25290, 25291..25335, 25336..25380, 25381..25425, 25426..25470, 25471..25515, 25516..25560, 25561..25605, 25606..25650, 25651..25695, 25696..25740, 25741..25785, 25786..25830, 25831..25875, 25876..25920, 25921..25965, 25966..26010, 26011..26055, 26056..26100, 26101..26145, 26146..26190, 26191..26235, 26236..26280, 26281..26325, 26326..26370, 26371..26415, 26416..26460, 26461..26505, 26506..26550, 26551..26595, 26596..26640, 26641..26685, 26686..26730, 26731..26775, 26776..26820, 26821..26865, 26866..26910, 26911..26955, 26956..27000, 27001..27045, 27046..27090, 27091..27135, 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33526..33570, 33571..33615, 33616..33660, 33661..33705, 33706..33750, 33751..33795, 33796..33840, 33841..33885, 33886..33930, 33931..33975, 33976..34020, 34021..34065, 34066..34110, 34111..34155, 34156..34200, 34201..34245, 34246..34290, 34291..34335, 34336..34380, 34381..34425, 34426..34470, 34471..34515, 34516..34560, 34561..34605, 34606..34650, 34651..34695, 34696..34740, 34741..34785, 34786..34830, 34831..34875, 34876..34920, 34921..34965, 34966..35010, 35011..35055, 35056..35100, 35101..35145, 35146..35190, 35191..35235, 35236..35280, 35281..35325, 35326..35370, 35371..35415, 35416..35460, 35461..35505, 35506..35550, 35551..35595, 35596..35640, 35641..35685, 35686..35730, 35731..35775, 35776..35820, 35821..35865, 35866..35910, 35911..35955, 35956..36000, 36001..36045