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

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Question 985860: what is the correct statement for the quadratic equation y = 2x^2+x+7
1) has a maximum value because a>0
2) has a negative y - intercept
3) has no intercepts on the x-axis
4)has a discriminant that is more then zero
5) none of the above
Click here to see answer by Edwin McCravy(20055)

Question 985902: I need help with two problems:
1. Write the point-slope form of the equation of the line which passes through (3,1) and is parallel to the line 3y = 2x - 3.
2. Multiply - 3x + 1 by 3x + 1 and then simplify.
Click here to see answer by macston(5194)

Question 985944: -3x + y = 1
-6x - 2y = -2
Click here to see answer by Alan3354(69443)

Question 986098: determine the equation of the straight line through the points (-2,1) and (3,-2)
Click here to see answer by Timnewman(323)

Question 986098: determine the equation of the straight line through the points (-2,1) and (3,-2)
Click here to see answer by Alan3354(69443)

Question 986097: solve for y in 5 + 6y = 8y - 21 and for p in 5p - 6 = 2(4-p)
Click here to see answer by Timnewman(323)

Question 974299: x=3.14
draw a graph of the equation on agraph paper by plotting points on it

Click here to see answer by EdenWolf(517)

Question 969642: 8y=4+x
Click here to see answer by EdenWolf(517)

Question 972072: Graph the two linear functions bellow on your own paper, then answer the next question given.
Y=3x + 1B)y =3x + 1
A: give 3 points that each graph go through.
B: describe how to graphs are similar.
C: describe how two graphs are different
Click here to see answer by EdenWolf(517)

Question 986142: Find a solution for the system in terms of the arbitrary variable z:
3x-2y+2z=5
2x+6y+z=6
(Enter your answer in ordered triple form.)
Click here to see answer by Alan3354(69443)

Question 986148: Do the circle x^2+y^2=16 and the line 5x-y=20 have any points in common?
If so, what are they?
Thank you in advanced.
Click here to see answer by Cromlix(4381)

Question 986148: Do the circle x^2+y^2=16 and the line 5x-y=20 have any points in common?
If so, what are they?
Thank you in advanced.
Click here to see answer by solver91311(24713)

Question 986162: Write an equation of the line containing the points (2, -3) and (4, 5). Write your solution in the standard form of y = mx + b
Click here to see answer by solver91311(24713)

Question 986162: Write an equation of the line containing the points (2, -3) and (4, 5). Write your solution in the standard form of y = mx + b
Click here to see answer by stanbon(75887)

Question 986203: 10(Y+5)=10
Click here to see answer by Alan3354(69443)

Question 986223: what is the slope of the point (-10,5)
Click here to see answer by Alan3354(69443)

Question 986280:
Click here to see answer by abhimessi(4)

Question 968994: Problem 13, page 182:

3(2x+6)-5(x+8)=x-22
Click here to see answer by EdenWolf(517)

Question 968995: Problem 14, page 182:

5x+9-(2x-3)=2x-7
Click here to see answer by EdenWolf(517)

Question 986385: How do you graph this line y = 1/3 + 2
Click here to see answer by Boreal(15235)

Question 986453: Is y+2=8X a direct variation?
Click here to see answer by stanbon(75887)

Question 986454: What equation that can be used to find t
Click here to see answer by solver91311(24713)

Question 986488: C(x+2)-5= b(x-3). Solve for x
How do I work this problem out?
Click here to see answer by solver91311(24713)

Question 986488: C(x+2)-5= b(x-3). Solve for x
How do I work this problem out?
Click here to see answer by macston(5194)

Question 986416: 3x-4=y determine if the equation is a line or equation

Click here to see answer by Alan3354(69443)

Question 986567: i am rusty...solving y and x intercepts....need help remembering procedure,,
find the x and y intercept the problem is: x/2 +y/7=1 these are meant to be fractions....do i first bring the 1 over to the left and make it a negative 1 and the answer becomes zero.Then I solve for y and x by making one of them zero.When I graph i will have two ordered pairs..can you help me with at least one,then I should be fine? thanks
Click here to see answer by macston(5194)

Question 986696: Find f(a), f(a + h),and the difference quotient f(a + h) − f(a)/h, where h ≠ 0.
f(x) = 5x + 2
f(a)=
f(a + h) =
f(a + h) − f(a)/=h
I'm totally lost with the f(a+h) - f(a) over h. Please help

Click here to see answer by Fombitz(32388)

Question 986700: Find an equation of the line that satisfies the given conditions.
Through (1/2, - 2/3); perpendicular to the line 4x − 8y = 1

Click here to see answer by Cromlix(4381)

Question 986699: f(x) = {4 if x ≤ 2
{2x -3 4 if x > 2

f(−3) =
f(0) =
f(2) =
f(3) =
f(5) =
Click here to see answer by stanbon(75887)

Question 986827: trying to find the slope of a line that goes through the points (10,5) without graphing. Please Help me. Would I use the formula y-y1=m(x-x1)?
Click here to see answer by stanbon(75887)

Question 986833: I am trying to find the slope of a line that goes through the origin and the point(10,5) without graphing. Please Help me. Would I use the formula y-y1=m(x-x1)?
Click here to see answer by josgarithmetic(39617)

Question 986844: I am trying to find the slope of a line that goes through the origin and the point(10,5) without graphing. I don't know what the origin is so I am very lost with this problem. I thought I could solve it using y-y1=m(x-x1) but it doesn't work. Please advise.
Click here to see answer by josgarithmetic(39617)

Question 986880: Okay, so I have to write either a equation in point slope form or slope intercept form for this question. It's not really a question but more like it gives you the information and you put it into one of the equations above. So it asks that the equation contains the x-intercept of 4x-y=8 and the point (-4,3).
Click here to see answer by solver91311(24713)

Question 986878: |4 - 3x| <= 13
I've been stuck on this one for the longest dont know where to start please help
Click here to see answer by solver91311(24713)

Question 986826: y=-1/4x+8
Click here to see answer by Timnewman(323)

Question 986821: I need help figuring out how to solve a linear equation
3x/5=2x/3+1
Click here to see answer by Fombitz(32388)

Question 987010: 6 + 3x = 9x + 6
Click here to see answer by Alan3354(69443)

Question 986995: M=undefined point=(2,4)
Click here to see answer by Alan3354(69443)

Question 987107: Method of Substitution
x+y-z=-1
8x-6y+4z=32
2x-2y-33z=5
Click here to see answer by Edwin McCravy(20055)

Question 987107: Method of Substitution
x+y-z=-1
8x-6y+4z=32
2x-2y-33z=5
Click here to see answer by TigerAlgebra(40)

Question 987159: The House Company rents out three houses.They charge $3000 more per month for the second house than for the first.The third house is rented out for the same amount as the second house,but was vacant for three months for renovations.What is the monthly rent for the first house if the total yearly rent for all three houses is $400 372?
Click here to see answer by macston(5194)

Question 987170: Consider the linear equation
ax + 3y = 5x -by + 8
Find a and b if the graph is vertical and passes through (4,0).
Here's what I did:
a(4) + 3(0) = 5(4) -b(0) + 8
4a = 20 + 8
4a = 28
a = 7
For a I got 7 which the book also has 7 for a but I couldn't get the answer for b which is -3 according to the book. Please help me with problem b.
Click here to see answer by Fombitz(32388)

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