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

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 Algebra: Linear Equations, Graphs, Slope Solvers Lessons Answers archive Quiz In Depth

 Question 250460: The function Hdescribed by H(x)=2.75x+71.48 can be used to predict the height in centimeters in a woman whose humerus is x cm long Predict the height of a woman whose humerus is 33 cm long The solution is ? cm? Can someone please help me with this question? Thank You Click here to see answer by Theo(3458)

 Question 250439: I am not sure how to graph the equation Y = 6x + 10x Click here to see answer by Theo(3458)

 Question 250375: Write the equation of the line that contains (-4,-3) and is parallel to the line y=-1/2x. Click here to see answer by Fombitz(13828)

 Question 250403: Please help me write two equations for this word problem. One equation for members and one for non members. To encourage customers a movie theater is offering memberships. The membership costs \$75.00 per year plus \$2.00 per movie. For non-members, the cost of a movie is \$5.75. Thanks sooo much! Lisa Click here to see answer by Theo(3458)

 Question 250390: how do you solve this function if they're is no number to plug in? f(y) f(x)=5x-9 Click here to see answer by Fombitz(13828)

 Question 250573: How do you change y+2=-3(x-1) into standard form Click here to see answer by richwmiller(9135)

 Question 250342: Can someone help please In 1990, the life expectancy of males was 64.7 years, in 1995 it was 67.8 years. Let E represent the life expectancy inyear t and let t represent the number of years since 1990. E(t)=?t+? round to the nearest tenth Use the function to predict the life expectancy in 2005 E(15)=? round to the nearest tenth Click here to see answer by ankor@dixie-net.com(15624)

 Question 250689: -7x>1/15 This says solve using the multiplication principle I came up with the answer {x/x<-1/105 is this correct? can someone help please thanks Click here to see answer by jsmallt9(3296)

 Question 250714: Amy paid \$79.47 for a pair of shoes during a 40% off sale. What was the regular price? It says round to the nearest cent if necessary. Can someone please help me I came up with \$198.67 but Im not so sure about it.Thanks Click here to see answer by MRperkins(300)

 Question 250719: how to state the slope n y-intercept of the graph of this equation: y=-2/3-4 Click here to see answer by richwmiller(9135)

 Question 250732: Graph the equation and identify the y-intercept y+x=-7 The ordered pair I came up wit is (-3,-4) is this correct somebody?anybody Thanks Click here to see answer by richwmiller(9135)

 Question 250742: How would I solve a Linear Equation in standard and slope-intercept form if the slope is 0? (For example: the 2 coordinates were (-3,8)and (1,8) which calculated to the slope being 0) Click here to see answer by richwmiller(9135)

 Question 250743: write an equation of the line that passes through the given point and is parallel to the given line. (5,4), y=3x+5 Click here to see answer by blwinbbbles(106)

 Question 250749: identify the slope that is parallel to these lines y=-3x+8 and 2x-3y=6 Click here to see answer by richwmiller(9135)
 Question 250749: identify the slope that is parallel to these lines y=-3x+8 and 2x-3y=6 Click here to see answer by Alan3354(30959)

 Question 250756: how do you do slope of the line Click here to see answer by richwmiller(9135)

 Question 250758: I need to find the domain of the function g(x)=2/7-5x Can someone help me please and is x condidered a real number? Thank you Click here to see answer by stanbon(57219)
 Question 250758: I need to find the domain of the function g(x)=2/7-5x Can someone help me please and is x condidered a real number? Thank you Click here to see answer by dabanfield(803)

 Question 250755: graph the line containing the given pair of points and find the slope (3,6), (-2,-3) m=? I can not figure this out would someone help me please and can I see a graph? Thanks so much Click here to see answer by richwmiller(9135)

 Question 250771: My derictions say find the slope of the line parallel to the graph of each equation and my first problem says y=1/2x+2.3 i do not understand this thankyou-carol Click here to see answer by stanbon(57219)

 Question 250920: write an equation in slope-intercept form for a line that passes through the given point and is parallel to the given line y=5x;(2,-1) Click here to see answer by tutorcecilia(2152)

 Question 250932: Y = 3 what is the slope for this line? X = -2 what is the slope for this line? Are they perpendicular? Explain Click here to see answer by Theo(3458)

 Question 250935: Fahrenheit temperature F is a linear function of Celsius temperature C. When C = 0, F = 32. When C = 100, F = 212. Write F as a linear function of C and Find F when C = 45? answer F = _____ answer C = 45 less than F = ______ Click here to see answer by MRperkins(300)

 Question 250934: Two angles are Supplementary. One angle measures three times the other one. Find the measure of both angles. Click here to see answer by MRperkins(300)

 Question 250933: A 5% alcohol solution is to be mixed with a 20% alcohol solution to make 30 liters of 10% alcohol solution. How many liters of each solution should be mixed? Don't have a clue as to where to start Click here to see answer by MRperkins(300)

 Question 250931: Use the x and y intercepts to graph the line: 3x + 2y = 6 3x + 2y = 6 (-3x) = 6 - 3x = 2y = -3x + 6 = divide each side by 2 but then stuck and also need to graph. Help!! Finals. Click here to see answer by MRperkins(300)

 Question 250923: write an equation in slope-intercept form for a line that passes through the given point and is parallel to the given line y=5x;(2,-1) Click here to see answer by MRperkins(300)

 Question 250924: write an equation in slope-intercept form for a line that passes through the given point and is parallel to the given line y=5x;(2,-1) Click here to see answer by Fombitz(13828)

 Question 250977: I have a question this problem says to simplify 5[42-(10-90)]=? I got 610 for the answer can someone tell me if that is correct? Thanks so much. Click here to see answer by vksarvepalli(154)

 Question 250981: I have another one I'm not sure about it says to solve the compound inequality 7>-4x+6 or 10≤-5x+4 The answer I got was (-∞,∞)is this correct? Thanks for your time. Click here to see answer by vksarvepalli(154)

 Question 250987: This says to find the domain of the function p(x)=x²-2x+5 What is the domain of p x|x is a real number and x>0} {x|x is a real number and x≠0} {x|x is a real number and x≠5} {x||x is a real number} These are the choices and I got the last one for the answer is this correct? Thanks to anyone who can help. Click here to see answer by stanbon(57219)

 Question 250991: What is the slope of the line passing through (3,5) and (7,21)? Click here to see answer by richwmiller(9135)

 Question 250997: I need to see a graph of these inequalities y≥-4 x≥5 it says graph the system of inequalities Can someone help me thanks Click here to see answer by richwmiller(9135)

 Question 251019: Complete the ordered pair so that it is a solution of 2x/3 + y - 1 = 0 . (-6, ___) 3 4 5 Click here to see answer by richwmiller(9135)

 Question 251039: The length of a golden rectangle is approximentaly 1.6 times the width.Find the dimensions of a golden rectangle if its area is 9000m2 Click here to see answer by solver91311(16868)

 Question 251049: How many real number solutions exist for the equation Y=x^2+8x+16 Click here to see answer by vleith(2825)

 Question 250972: the current in a stream moves at a speed of 3 mph. Aboat travels 45 mi upstream and 45 mi downstream in a total time of 8 hr. what is the speed of the boat in still water? Click here to see answer by checkley77(12569)

 Question 250980: This problem says solve then graph on a number line 7x≥42 The solution is mulitle choice and Im not sure I got the right one Can someone help me please? the choices are {x|x≥6} {x|x≤6} {x|x<6} {x|x>6} Click here to see answer by PRMath(123)