Tutors Answer Your Questions about Linear-equations (FREE)
Question 1041271: I am having a hard time with this. I don't understand. Can someone please break down and help me answer the below questions? I have viewed lectures and looked at books but I am getting no where.
2. Given the line with the equation y= -2, Find three ordered pairs to satisfy the equation. Find the slope of the line. Graph the line.
3. Given the line with equation x =3, Find 3 ordered pairs that satisfy the equation. Find slope of line. Graph the line.
4. Given the line with equation 2x + 5y =10
write equation in slope-intercept form. state slope of the line. state y-intercept of line as ordered pair. Use slope-intercept form to graph line.
5. Find slope of line through points (-3, 7) and (2, -5)
6. Write in point slope form, y - y^1 = m (x - x^1), equation of line through the two points given in above question.
7. Convert equation that wrote in above question to slope intercept form, y = mx + b
8. convert equation in #6 to standard form, Ax + By = C, A, B, C are integers and A > 0
9. Given line with equation 3x-y=5, write equation in point-slope form of line perpendicular to given line through point )3, -2)
10. ) The manager at a local Best Buy store kept track of daily sales of the iPhone 6 when it was first introduced. He noticed that sales were very high at first, but showed a steady decrease. For example, on day 5 after the phones first went on sale, the store sold 238 iPhone 6’s, but on day 10 after the phones first went on sale, the store sold only 153 iPhone 6’s. Assume that the relationship between number of days since the phone became available and number sold is linear and, let x = the number of days since the phone was released and y = number of phones sold at this Best Buy store.
a) Write two ordered pairs to represent the sales on the days described.
b) Find the slope of the line through those ordered pairs.
c) Write an equation in point-slope form of the line.
d) Convert the equation to slope-intercept form.
e) Explain what the slope and the y-intercept mean in the context of this problem.
Click here to see answer by Alan3354(69443)   |
Question 1041271: I am having a hard time with this. I don't understand. Can someone please break down and help me answer the below questions? I have viewed lectures and looked at books but I am getting no where.
2. Given the line with the equation y= -2, Find three ordered pairs to satisfy the equation. Find the slope of the line. Graph the line.
3. Given the line with equation x =3, Find 3 ordered pairs that satisfy the equation. Find slope of line. Graph the line.
4. Given the line with equation 2x + 5y =10
write equation in slope-intercept form. state slope of the line. state y-intercept of line as ordered pair. Use slope-intercept form to graph line.
5. Find slope of line through points (-3, 7) and (2, -5)
6. Write in point slope form, y - y^1 = m (x - x^1), equation of line through the two points given in above question.
7. Convert equation that wrote in above question to slope intercept form, y = mx + b
8. convert equation in #6 to standard form, Ax + By = C, A, B, C are integers and A > 0
9. Given line with equation 3x-y=5, write equation in point-slope form of line perpendicular to given line through point )3, -2)
10. ) The manager at a local Best Buy store kept track of daily sales of the iPhone 6 when it was first introduced. He noticed that sales were very high at first, but showed a steady decrease. For example, on day 5 after the phones first went on sale, the store sold 238 iPhone 6’s, but on day 10 after the phones first went on sale, the store sold only 153 iPhone 6’s. Assume that the relationship between number of days since the phone became available and number sold is linear and, let x = the number of days since the phone was released and y = number of phones sold at this Best Buy store.
a) Write two ordered pairs to represent the sales on the days described.
b) Find the slope of the line through those ordered pairs.
c) Write an equation in point-slope form of the line.
d) Convert the equation to slope-intercept form.
e) Explain what the slope and the y-intercept mean in the context of this problem.
Click here to see answer by stanbon(75887) |
Question 1041347: a lady went to a shopping mall and spent half of what she had by buying hankies and gave a dollar to a beggar outside the shop. she spent half of what was left for lunch and followed that up with 2$ tip. she spent half of remaining amount on a book and three dollar on bus fair. when she reached home she found that she had exactly one dollar left. how much money did she start with.
Click here to see answer by jorel555(1290) |
Question 1039556: Aaliyah, Julio, Dan, and Miriam are each studying sets of data. Aaliyah is working with 14 data pairs with a correlation coefficient of 0.9. Julio is working with 13 data pairs with a correlation coefficient of –0.8. Dan is working with 10 data pairs with a correlation coefficient of 0.1. Miriam is working with 15 data pairs with a correlation coefficient of –0.2. For which two data sets is a linear regression model reasonable?
a) Aaliyah's and Julio's
b) Julio's and Miriam's
c) Dan's and Miriam's
d) Miriam's and Aaliyah's
Click here to see answer by robertb(5830)  |
Question 1041529: a lady went to a shopping mall and spent half of what she had by buying hankies and gave a dollar to a beggar outside the shop. she spent half of what was left for lunch and followed that up with 2$ tip. she spent half of remaining amount on a book and three dollar on bus fair. when she reached home she found that she had exactly one dollar left. how much money did she start with.
P.S= PLEASE ANWSER USING A EQUATION
Click here to see answer by solver91311(24713)  |
Question 1041713: hello,
once two equations are in slope-intercept form, are they only solvable graphically or can you solve them algebraically or otherwise?
for instance, Y=1/6x + 3 and Y=2/3 + 0. Their answer is 6,4. Please show me the steps to this answer.
thank yous.
Click here to see answer by Alan3354(69443) |
Question 1041726: I feel I should know this already sorry. But why multiply by 6? (1/6)x - (2/3)x;
if you put into like terms just multiply 2/3 by 2 for ((4/6)x
Your 2nd eqn has no x term.
If you meant:
Y = (1/6)x + 3 and Y = (2/3)x + 0
----
Since they both = y,
(1/6)x + 3 = (2/3)x
Multiply by 6
x + 18 = 4x
3x = 18
x = 6
y = 4
--> (6,4)
Click here to see answer by jim_thompson5910(35256) |
Question 1041911: An SAA plane and a BA flight take off at the same time from points that are 1 275 km apart. They fly in a direct route towards each other. They cross at x hours.
If the BA plane flies 225 km/h, how far will it fly in x hours? 225 x km
If the SAA plane flies 200 km/h, how far will it fly in x hours? 200 x km
What expression expresses the relation between the results of ‘a’ and ‘b’ and the 1275 km? 200x = 225x = 1275
Solve this equation and find how long it takes SAA and BA planes to cross flight paths.
Click here to see answer by jorel555(1290) |
Question 1042223: 1.Write the equation of the line with a slope of -1/3 and passing through the point (6, -4).
2.Write the equation of the line passing through the points (0, -4) and (-2, 2).
3.Write the equation of the line passing through the points (-6,1) and (-4,2).
4.Write the equation of the line with an undefined slope, passing through the point (2, 5).
Click here to see answer by josgarithmetic(39617) |
Question 1042223: 1.Write the equation of the line with a slope of -1/3 and passing through the point (6, -4).
2.Write the equation of the line passing through the points (0, -4) and (-2, 2).
3.Write the equation of the line passing through the points (-6,1) and (-4,2).
4.Write the equation of the line with an undefined slope, passing through the point (2, 5).
Click here to see answer by stanbon(75887) |
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