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

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Question 438897: Customers of a phone company can choose between two service plans for long distance calls. The first plan has a $19 monthly fee and charges an additional $0.13 for each minute of calls. The second plan has a $24 monthly fee and charges an additional $0.08 for each minute of calls. For how many minutes of calls will the costs of the two plans be equa
Click here to see answer by jorel1380(3719)

Question 439025: three ordered paires that satisfy the equation: 2x+y=4 are what?
Click here to see answer by stanbon(75887)

Question 439256: Write the point-slope form of an equation that passes through the given points: (0,5) and (4,0).
A. y-5=5/4x
B. y-5=-5/4x
C. y=-5/4(x-5)
D. y=5/4 (x-5)
Addition details: I've figured out that the slope is 5/4. So I am pretty sure the answer is either A or D. Thank you to whoever can help with this problem!
Click here to see answer by scott8148(6628)

Question 439358: A line passes through (�10, 5) and (�9, 10).
a. Write an equation for the line in point-slope form.
b. Rewrite the equation in standard form using integers.
Plz help me ive been stuck with this problem 4 a long time.

Click here to see answer by stanbon(75887)

Question 439370: Find the slope of the curve f(x) = (4x - 3)(2x^3 +1) at x = 1
Click here to see answer by nerdybill(7384)

Question 439372: Can I get help with the following problem please!!
Find the equation of the tangent line to the curve y = (4x + 1) / (3x - 2) at the point (1, -2). (Write the line in y = mx + b form)

Click here to see answer by stanbon(75887)

Question 439383: Find the point-slope form of the equation of the line passing through the points (�2, 2) and (�4, �8). Can some one help me with this problem plz , i got independent studies & i need to fet 70% or more to succeed to the next test but im only passing up to 67% Help me please.
Click here to see answer by robertb(5830)

Question 439449: determines the cutoff points with the axes of the function y = f (x) =- 2x +3
Click here to see answer by stanbon(75887)

Question 439509: a man when asked how many hens and buffaloes he has, told that his animals have 120 eyes and 180 legs. How many hens and buffaloes has he?
Click here to see answer by rwm(914)

Question 439518: solve by elimination
3x - 6y = 5
3x - 6y = 6
Click here to see answer by rwm(914)

Question 439510: a railway half ticket costs half the full fare and the reservation charge for the distance covered. for a journey of 12km the charge paid is 89 and for a journey of 20km the charge paid is 145. what will a person have to pay for travelling a distance of 30km?
Click here to see answer by rwm(914)

Question 439679: Is y=5x+6 and 18x+y=-54 parallel?
Click here to see answer by asuar010(338)

Question 439791: solve: 2/3x-8=3
Click here to see answer by jorel1380(3719)

Question 439928: How do I solve and graph the following equation?
6x is less than or equal to 36
Thank you.
Tammy
Click here to see answer by MathLover1(20849)

Question 439954: find an equation of the line having the given slope and containing the given point m=-4, (6,8)
the equation of the line is y=
Click here to see answer by rfer(16322)

Question 439981: which is an equation of a line that is parallel to MN?
a: 2x-y=3
b: x-2y=3
c: 8x+4y=4
d: 9x+18y=-9

Click here to see answer by richard1234(7193)

Question 439945: Find the slope, if it exists, of the line containing the pair of points.
(-6,-12) and (-20,-15)
Click here to see answer by richard1234(7193)

Question 439979: find the elimination method
6x-6y=-48
-3x-2y=-11
Click here to see answer by stanbon(75887)

Question 440109: Could someone please explain to how to graph on a number line where x is a real number?
-3 < x ≤ 4
Click here to see answer by stanbon(75887)

Question 440141: what ordered pair falls on a line with the slope 3/4 and a y-intercept of 2?
Click here to see answer by rapaljer(4671)

Question 440226: Find F(2a) if f(x)= x^2-2x+4
Click here to see answer by ewatrrr(24785)

Question 440420: 3+2i
______
4-7i
Click here to see answer by solver91311(24713)

Question 440486: My math homework question is to draw a line through (-2,4) with a slope of -2. Label an intercept. I am not sure if i am doing y=MX+B or y=m(x-x1)+y1 and how do i graph that? thanks
Click here to see answer by Alan3354(69443)

Question 440662: Could you please put these two equations in slope-intercept form?
-3x+y=-12
-6x+2y=-24
Thank You!
Click here to see answer by mananth(16946)

Question 440796: this is a question on my math homework. determine if the following lines are parallel, perpendicular, or neither. explain how your know show any work.
first line
-2x=18-4x i figured the top line out -2y=4x=18 divided all by -2 y=-2x-9 slope is -2.

second line--im stumped on this one.
1y/5-2x/5=1/20

Click here to see answer by Alan3354(69443)

Question 440833: You have a cable plan that costs $39 a month for a basic plan plus one movie channel. Your friend has the same basic plan plus two movie channels for $45.50. What is the basic plan charge That you pay?
Click here to see answer by jorel1380(3719)

Question 440896: Determine the slope and y-intercept of the two graphs: 3x+y =8 and -x+2y=4
Click here to see answer by lwsshak3(11628)

Question 441175: If a line has not y-intercept, what can you say about the line? What if a line has no x-intercept?
Click here to see answer by robertb(5830)

Question 441527: Find the x- and y-intercepts. If no x-intercepts exist, state so.
f(x) = x2 + 16x + 64
Click here to see answer by josmiceli(19441)

Question 441530: are the graphs of the line in the pair parallel.?
y=-1/9x+20
x+9y=-9
Click here to see answer by rwm(914)

Question 441613: Write an equation that satisfies the given conditions: f(0)=12,f(3)=-2
Click here to see answer by stanbon(75887)

Question 441613: Write an equation that satisfies the given conditions: f(0)=12,f(3)=-2
Click here to see answer by Edwin McCravy(20055)

Question 441613: Write an equation that satisfies the given conditions: f(0)=12,f(3)=-2
Click here to see answer by robertb(5830)

Question 441715: Find the slope and the y-intercept of the line.
2x - 4y = -12

Click here to see answer by robertb(5830)

Question 441867: Select the choice below that could be the first step in solving the following system of equations using substitution:
9x + -y − 8 = 0
7x − 3y = 1
Click here to see answer by rwm(914)

Question 441944: Story prolem and need help.
When making a telephone call using a calling card, a call lasting 4 minutes costs $1.35. A call lasting 11 minutes costs $3.10. Let y be the cost of making a call lasting x minutes. Assume the exercise describes a liear relationship.
Click here to see answer by htmentor(1343)

Question 442168: Find the equation of the line (in slope-in form) that is perpendicular to 2x-y=4 and passes through the vertex of the parabola y=x^2-6x+7
I know slope int for is 2x-4=y but having problems with the rest
Click here to see answer by josmiceli(19441)

Question 442272: The bus in Cheyenne charges $5.00, regardless of the distance you ride. I have to graph this and I believe it is either a no slope line(horizontal) or an undefined slope(verticle). I am not sure which is the independent varible (x) and which should be the dependent varible (y). Any help would be great. Thanks!!
Click here to see answer by ilana(307)

Question 442281: State whether the statement is TRUE or FALSE.
(a) y = 3x � 1 and y = 2x �1 are parallel.

(b) y = 5x + 6 and 5y = x + 6 have the same y-intercept.

(c) The gradient of 5y = x + 6 is 1/5 .

(d) y = 4 is a horizontal line.

(e) y = 4x goes through the point (4, 1).

(f) x = 4 is a vertical line.

Click here to see answer by ilana(307)

Question 442279: Calculate the slope of a line which passes through the points
(a) (6, �2) and (4, 10). (b) (�3, 5) and (�3, �7)

Click here to see answer by rfer(16322)

Question 442328: Find a new perimeter of a rectangle which has 10 inches for the width and the length is 4 less than 3 times the width.
Click here to see answer by swincher4391(1107)

Question 442275: why should we clear decimals when solving linear equations and inequalities
Click here to see answer by mananth(16946)

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