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

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Question 64991: Please answer this question for me.
If one linear equation is y=(-3)x+5, which of the following linear equations will produce a system with no solution?
A.) y=1/3+5
B.) 6x+2y=8
C.) 4x-3y=12
D.) -3x+y=5
Thank you so much. i beleive the answer is C but i am not very sure.
Click here to see answer by stanbon(26275)

Question 64986: 21 - y = -87 - 2y What does y equal?
Click here to see answer by funmath(2873)

Question 65007: Can Anyone help me with this problem?
Solve the equation algebraically. Check your answer graphically
-3x+11+2
Click here to see answer by stanbon(26275)

Question 65013: -15+-16 =
Click here to see answer by checkley71(8405)

Question 64970: PLease help me solve these 4 linear equations
x-4<-6
x+12<-5x
2x+3>x-1
7-5x<22

Click here to see answer by stanbon(26275)

Question 64985This question is from textbook Glencoe Algebra 1

: Julio Mendez is a carpenter. He is building a staircase between the first and second floors of a house, a height of 9 feet. The tread, or depth of each step, must be 10 inches. The slope of the staircase cannot exceed 3/4.
How many steps should he plan?This question is from textbook Glencoe Algebra 1

Click here to see answer by cristiana(10)

Question 64984This question is from textbook Glencoe Algebra 1

: Julio Mendez is a carpenter. He is building a staircase between the first and second floors of a house, a height of 9 feet. The tread, or depth of each step, must be 10 inches. The slope of the staircase cannot exceed 3/4.
What is the measure of the riser, or height of each step?
Thanks sooo much!This question is from textbook Glencoe Algebra 1

Click here to see answer by 303795(562)

Question 64863: L has y-intercept (0, 2) and is perpendicular to the line with equation 2x - 3y = 6.
Click here to see answer by funmath(2873)

Question 64748: Write the equation of the line with given slope and y-intercept. Then graph each line using
the slope and y-intercept.
Slope: -2; y-intercept: (0, 4)
Click here to see answer by funmath(2873)

Question 65041: Please help write an equation for this:
x -2 -1 0 1 2
f(x) -5 -2 1 4 7
Thanks.
Click here to see answer by funmath(2873)

Question 65047This question is from textbook Algebra 1

: Please help! My intructions are: Graph the points and draw a line through them. Write an equation in slope-intercept form of the line that passes through the points.
I understand my instructions and I understand the graphing part of it but I can't seem to get the right answer. All the book gives me are two plot points; (-1, -2), (2, 6).
I've done the beging to find the slope, m. 6+2 divided by 2+1 and got . I've tried it many time and keep getting different answers for "x" and "y" and can't get "b". The answer in the back of my textbook is .
Once again please help.This question is from textbook Algebra 1

Click here to see answer by stanbon(26275)

Question 65082This question is from textbook An Incremental Development

: Find the equation of the line that passes through the point (7,-2) and is parallel to the line that passes through (-2,-2) and (3,3)
This question is from textbook An Incremental Development

Click here to see answer by funmath(2873)

Question 65096: Please help me with this linear equation: 7(2x-3)-4(x+5)=8(x-1)+3 I do all of my work on computers that is why i don't have a textbook . This book is called Algebra DeMYSTiFieD a self teaching guide! Thank you!
Click here to see answer by stanbon(26275)

Question 65122: find the equation of a line for this points (-1,3) and (3,-4)
Click here to see answer by funmath(2873)

Question 65053This question is from textbook
: a.x-6y=8 b. y=-1 c. y=x^2+4 d. x/2=y/3=5 e. 5/x+3/y=8
which of these equations are linear?This question is from textbook

Click here to see answer by rchill(405)

Question 65044: 29. 256=16c
31. 400=25n
33. 1/2x=-40
35. 0=3/5t
Click here to see answer by 303795(562)

Question 65249: My problem is a reading problem, it is as stated:
There is a strange store that sells 2 apples for $4, and 5 apples for $7. Assuming that the relationship is linear, how much do you think 10 apples will cost in that store?
I believe that they are asking me to add by three on each side, for example:
2+3=5 apples so 5+3=8 apples so 8+3=11 apples which is 1 more apple than I need. $4+$3=$7 so $7+$3=$10 so $10+$3=$13 which would be for 11 apples instead of 10. I am so confused, I do know that I would not shop at that store! Please help! As you can tell I haven't had a math class in 20 years!
Click here to see answer by ptaylor(1578)

Question 65257: Find an equation that goes through (4,0) and (4,4).
I came up with x-4y=4
but for so reason it doesn't look right.
thanks so much for your help!
Click here to see answer by stanbon(26275)

Question 65253: Find an equation of a line parallel to
y = -2x + 5 and through (0,8)
Click here to see answer by checkley71(8405)

Question 65250: Find an equation of a line with slope -3 and through (2,4).
Click here to see answer by checkley71(8405)

Question 65298: WHAT IS THE SLOPE OF A LINE CONTAINING THE POINTS (0,2)AND (4,14)
Click here to see answer by funmath(2873)

Question 65297: for y=3x-6
What is the slope?
What is the Y intercept?
What is the x intercept?
Click here to see answer by funmath(2873)

Question 65296: for y=3x-6
What is the slope?
What is the Y intercept?
What is the x intercept?
Click here to see answer by funmath(2873)

Question 65290: Hi! Could someone graph y=3x for me?
Thanks
Click here to see answer by funmath(2873)

Question 65285: WHAT IS THE SLOPE OF A LINE CONTAINING THESE POINTS (0,2) AND (4,14)
Click here to see answer by checkley71(8405)

Question 65284: If (5,6) IS ON A LINE WITH THE SLOPE OF 4/3, GIVE THE COORDINATES FOR ANOTHER POINT ON THE LINE.
Click here to see answer by checkley71(8405)

Question 65286: PLOT THE LINE THAT CONTAINS THE POINT(2,1) THAT HAS A SLOPE OF -2?
Click here to see answer by checkley71(8405)

Question 65332: if the midpoint of segment AC is (5,-1) and one of the endpoints is (6,-4), what is the other endpoint?
Click here to see answer by stanbon(26275)

Question 65337:
Not meaning to brake the rules, but this has to be completed by tomorrow or my life is over! Thanks to all who care and help!

1. Which of the following represents this statement: “Four more than five times a number”? (1 point)
5x – 4
5x + 4
4x - 5
4x + 5
2. Find the product: (-3)(6) (1 point)
18
9
-18
-9
3. If the midpoint of segment AC is (5, -1) and one of the endpoints is (6, -4), find the other endpoint. (1 point)
(4, 2)
(2, 4)
(5.5, -2.5)
(-4, 2)
4. Solve: (1 point)
7
-2
-7
2
5. Solve: -9 – (-10) (1 point)
-19
1
19
-90
6. Write the following equation in slope-intercept form: 5x + 2 = 3y (1 point)
2x - 3y = 5

7. Graph the following line: (1 point)

8. Find the slope of the equation: 5x + 6y = 30 (1 point)
-6
-
-5
9. Simplify the ratio: 5:15 (1 point)
1 to 10
1:10
5:15
1:3
10. Use the midpoint formula to find the midway point between this pair of points: A(-8, 3) and B(4, -5). (1 point)
(-6, -4)
(1, 2)
(2, -1)
(-2, -1)
11. Simplify: (1 point)

12. Simplify: 5 + 3(5 – 3)2 (1 point)
41
32
17
256
13. Simplify: (1 point)
0

14. Use the Distributive Property to simplify the following expression: 2(x + 4) (1 point)
2x + 4
2x + 6
2x - 2
2x + 8
15. Find the slope between the points: (2, -5) and (-3, -7). (1 point)

-12
12
16. Evaluate: 24 ÷ 23 - 3 = (1 point)
-1
1
6
0
17. Simplify: 3a3b2 + 5a2b2 - 14ab2 - 3a3b2 (1 point)
5a2b2 - 14ab2
6a3b2 - 9a2b2
-9a8b8
5a2b2 - 14ab2 - 6a3b
18. Simplify: (1 point)
2x +
x + 5
x - 20
x - 5
19. Name the property that is illustrated: a + (-a) = 0 (1 point)
Identity
Additive Inverse
Reflexive
Multiplicative Inverse
20. Solve: (1 point)
2
-2
21. Evaluate x3 – x for x = –1 (1 point)
-1
-2
0
2
22. A(n) __________________ is any positive or negative whole number or zero. (1 point)
integer
rational number
irrational number
real number
23. The formula for finding area of a triangle is . If the base of a certain triangle is 5 in. and the height is 12 in., what is its area? (1 point)
120 in.2
60 in.2
30 in.2
240 in.2
24. Which symbol makes this statement true? –4 ____ –10 (1 point)
<
>

25. Solve: 1 + a = 2a (1 point)
a = 2
a = 1
a =
a = 3
26. Evaluate: when a = 2 and b = –8 (1 point)
–

–
27. Solve: 2a + 14 = 2a – 5 (1 point)
a = 7
no solution
a = 1
a = -
28. Solve: 2 – 3(4 – 5y) = 3(y + 3) + 5 (1 point)
y =
y =
y = 2
y = -2
29. Simplify: (1 point)
2a – 1
2a – 19
18a – 1
3a + 1
30. Solve: (1 point)

31. Using the Pythagorean Theorem, find the distance between this pair of points: A(1, 1) and B(3, 4).
(1 point)

8
32. Solve: 4 – 6(x + 2) 5x + 36 (1 point)

33. Solve for a: (1 point)
a = 3
a = 1
a = 4
a = 2
34. What is 15% of 345? (1 point)
150
51.75
5,175
2,300
35. In which quadrant is the coordinate point A(-4, 3)? (1 point)
Quadrant I
Quadrant II
Quadrant III
Quadrant IV
36. Where would coordinate point B(0, -4) be plotted?
(1 point)
Quadrant II
x-axis
Quadrant III
y-axis
37. What letter represents the y-intercept in the slope-intercept equation? (1 point)
x
y
m
b
38. Find the x- and y-intercepts of y = 4x + 3
(1 point)
(3, 0) and (0, 4)
(, 0) and (0, 3)
(, 0) and (0, 3)
(4, 0) and (0, 3)
39. What is the equation of this line?
(1 point)
x = 2
y = 2
x = -2
y = -2
40. Is the point (2, –6) on the line y = –4x + 2? (1 point)
yes
no
maybe
not enough information
41. What is the equation of the vertical line passing through (-3, 4)? (1 point)
x = 4
y = 4
x = -3
y = -3
42. Which line does not have a y-intercept? (1 point)
y = -3x
y = x + 6
y = 2
x = -4
43. Is (-2, -1) the solution of the linear system: ? (1 point)
yes
no
maybe
not enough information
44. Determine the solution of the system: (1 point)
(2, 21)
(2, -7)
(5, 2)
(-2, -7)
45. What percent of 14 is 7? (1 point)
%
7%
50%
98%
46.
Which of the following is a graph in which a mark above a number line indicates the frequency of each value? (1 point)
bar graph
line plot
circle graph
time line
47. Use the Distance Formula to find the distance between this pair of points: C(5, 8) and D(5, 6). (1 point)
2
4
5
12
48. Find the slope of the line y = -6x - 3 (1 point)
6
-6
3
-3
49. Simplify: –(–3) – (–8) + (–4) (1 point)
-7
1
-9
7
50. Graph the following line: y = 3 (1 point)

Click here to see answer by 303795(562)

Question 65474: ok this is a problem on linear programming
Superbats makes two kinds of bats. The wallbanger takes 8 hours to trim and turn on and 2 hours to finish. it has a profit of 17 dollars. the dingbat takes five hours to trim and turn on and 5 hours to finish. it has a profit of 29 dollars. the total time per day available is in 80 hours. there are 50 hours available for finishing. what combination of bats will maximize profit
Click here to see answer by stanbon(26275)

Question 65522: Graph each of the following equations.
(20) y = 3/4x+2
Graph each of the following equations, using the intercept method.
(28) 2x +3y = 6
Graph each of the following equations, by first solving for y.
(34) 2x-3y=12

Click here to see answer by funmath(2873)

Question 65648: Simplify each of the followingby combining like terms.

#36
x^2y + xy - y + 10x^2y - 2y + xy
Click here to see answer by checkley71(8405)

Question 65736: What is the linear equation that created this table:
x=-3,-2,-1,0,1, 2, 3
y= 0, 2, 4,6,8,10,12
I am having trouble determining the formula/s to answer these problems.
Thank you
Click here to see answer by stanbon(26275)

Question 64589This question is from textbook ALGEBRA 1

: How do you solve linear equations and inequalities of two variables?
How do you graph linear equations of two variables?This question is from textbook ALGEBRA 1

Click here to see answer by praseenakos@yahoo.com(417)

Question 65755: Complete the following: “the slope of a line tells you”…..
Click here to see answer by venugopalramana(3286)

Question 65759This question is from textbook Beginning Algebra

: Graph the following equation (please show me step by step how you got your answer). I worked this problem for three hours and got 0 every time.
y = 3/4x + 2This question is from textbook Beginning Algebra

Click here to see answer by funmath(2873)

Question 65782: Find the slope of the following line passing through the given points:(2,1)(-4,10).
Click here to see answer by stanbon(26275)

Question 65896: Mr. JOnes was charged the following rates for his phone bill:
$1.85 for 37 minutes
$3.75 for 1 hour 15 minutes (75 minutes)
a) Put this information into (x,y) pairs. Which one is the independent variable?
b) What is the rate charged per minute?
c) IS there a fee for having the phone?_____ If so, what is it?
d) What is the equation that can be used to find the price for any amount of minutes used?
e) What would be the cost if Mr. Jones used 118 minutes?
Click here to see answer by stanbon(26275)

Question 65941: how do you graph the equation y=x^2-6x+6??? plllzz help....thannk u very much ^^

this is from a midyear exam in january 2004 in bronx science
Click here to see answer by stanbon(26275)

Question 65946: Write the equation of the line L satisfying the given geometric conditions:
L has y-intercept (0,2) and is perpendicular to the line with equation 2x-3y=6
I have gone over and over this and can not figure it out, and there is not an example that I can find in the book, which by the way is an online text so I do not have an ISBN number.
Click here to see answer by Earlsdon(4900)

Question 65971: Determine the values of (m) that satisfy the following equation using the completion of the square method and compare the solutions by drawing a graph
25m^2-5m-2=0
Click here to see answer by uma(370)

Question 66012This question is from textbook Beginning Algebra

: Write the equation of the line with given slope and y-intercept.
Slope: 5; y-intercept: (0, -2). Thanks for any assistance with this problem.This question is from textbook Beginning Algebra

Click here to see answer by funmath(2873)

Question 66011This question is from textbook Beginning Algebra

: Write the equation of the line with given slope and y-intercept. Then graph each line using the slope and y-intercept.
I am not quite sure what they mean by write out the equation of the line.
Slope: -2; y-intercept: (0, 4). I can do the graph but I do not quite understand what they mean by writing out the equation. Any help is appreciated. Thanks.This question is from textbook Beginning Algebra

Click here to see answer by funmath(2873)

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