Tutors Answer Your Questions about Linear-equations (FREE)
Question 412729: Use the graph of y = x^2 + 4x - 5 to answer the following:
a) Without solving the equation or factoring, determine the solution(s) to the equation, , using only the graph.
Answer:
Explain how you obtained your answer(s) by looking at the graph:
b) Does this function have a maximum or a minimum?
Answer:
Explain how you obtained your answer by looking at the graph:
c) What are the coordinates of the vertex in (x, y) form?
Answer:
d) What is the equation of the line of symmetry for this graph?
Answer:
Click here to see answer by ewatrrr(24785)  |
Question 413559: 1. How do I find the equation of the line passing through the point (1,1) and parallel to y=5x-6?
2. How do I find the equation of the line passing through the point (1,5) and parallel to 4x+7y=18?
Hello, I am having a very hard time with this coordinate geometry problem. Can anyone please help? Thanks so much!
Click here to see answer by sudhanshu_kmr(1152)  |
Question 413566: Hello, I am stuggling with this co-ordinate geometry problem. Any help is greatly appreciated!
Find the equation of the perpendicular bisector of the interval joining (-5,2) and (3,-4). Leave your answer in general form.
Thank you so much for your time and consideration!
Click here to see answer by ewatrrr(24785)  |
Question 413564: Hi, can anyone help figure out these two coordinate geometry problems?:
1) How do I find the equation of the line passing through (12,4) and perpendicular to y=3x+6? Leave answer in general form.
2) How do I find the equation of the line passing through (6,10) and perpendicular to 3x-4y=12? Leave answer in general form.
Thank you so much for your time! I have test on these tomorrow.
Click here to see answer by Alan3354(69443)  |
Question 413589: Decide whether the pair of lines is parallel, perpendicular or neither.
4x+3y=3
3x+4y=9
Here is what I have:
4x+3y=3
3y=-4x+3
y=-4/3x + 3/3 (= 1)
3x+4y=9
4y=-3x+9
y=-3/4x + 9/4
What would that make this and can you help explain the difference? I am pretty sure that parallel has the same slope and perpendicular is -1/x. I maybe be totally wrong, but I think it is neither.
Help would be appreciated.
Thank you much,
Jeffrey G
Click here to see answer by ewatrrr(24785)  |
Question 413589: Decide whether the pair of lines is parallel, perpendicular or neither.
4x+3y=3
3x+4y=9
Here is what I have:
4x+3y=3
3y=-4x+3
y=-4/3x + 3/3 (= 1)
3x+4y=9
4y=-3x+9
y=-3/4x + 9/4
What would that make this and can you help explain the difference? I am pretty sure that parallel has the same slope and perpendicular is -1/x. I maybe be totally wrong, but I think it is neither.
Help would be appreciated.
Thank you much,
Jeffrey G
Click here to see answer by Alan3354(69443)  |
Question 414087: I am stuck on a problem, my teacher only wants me to use the Elimination method
6x-y=20
3x-y=7
I am getting
x=3 but when I substitute for x in the second equation I get
6(3) + y = 20
18 + y = 20
but I can't divide each side by 18 evenly, how do I solve for y?
Click here to see answer by ewatrrr(24785)  |
Question 414415: it costs 50 dollars plus 10 dollars per hour to rent a park pavillion. 1.write an equation in slope-intercept form that shows the cost y for renting the pavillion for x hours. 2.find the cost of renting the pavillion for 8 hours
Click here to see answer by rfer(16322) |
Question 414593: Please help me solve this.
Use k as the constant of variation to write an equation to express each of the following relations.
a) The distance (d) in kilometers covered by train varies directly as its speed(s) in kilometer per hour.
b) The perimeter (P) of a regular pentagon varies directly as the length of a side(x).
c) THe commission (C) a salesman gets varies directly as the amount of his sales (S).
d) The circumference (C) of a circle varies directly as the diameter (d), What is the constant of variation?
Click here to see answer by Gogonati(855)  |
Question 414569: Please help me solve this.
Use k as the constant of variation to write an equation to express each of the following relations.
a) The distance (d) in kilometers covered by train varies directly as its speed(s) in kilometer per hour.
b) The perimeter (P) of a regular pentagon varies directly as the length of a side(x).
c) THe commission (C) a salesman gets varies directly as the amount of his sales (S).
d) The circumference (C) of a circle varies directly as the diameter (d), What is the constant of variation?
Click here to see answer by richard1234(7193)  |
Question 414595: kindly help me with this question
a) x -2, -1, 0, 1, 2
y 3, 5, 7, 9, 13
b) x -1, 9, 1, 2, 3
y 2, 0, -2, -4, -6
c) x 1, 0, 1, 2, 3
y -.08, 0, 0.8, 1.6, 2.4
d) x -2, -1, 0, 1, 2
y -0.2, 0.4, 1, 1.6, 2.2
please examine the tables where x has both negative and positive values. In what way does a table of values that represents a direct variation differ from one that does not?
Click here to see answer by stanbon(75887) |
Question 414592: Please help me answer this question.
Determine the constant of proportionality in each of the following direct variations and find the unknown value of the indicated variable.
a) if y varies directly as x, and y=10 when x=5, find y when x=15.
b) If y varies directly as x, and y =5 1/4 when x=3, find x when y=20
c. if the constant of direct variation is 3.75, find x when y=10.
d) if y varies directly as x and the point (3,5) is on the graph of the equation describing the relation, find the equation of the variation
Click here to see answer by ewatrrr(24785)  |
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