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

Tutors Answer Your Questions about Linear-equations (FREE)

Question 443123: Solve the following systems of equation 2x + y =11 3x + 4y =4
Click here to see answer by swincher4391(726)

Question 443187: find the slope and y intercept of the line in the given equation.
y=-9/13x-7
Click here to see answer by swincher4391(726)

Question 443271: solve by graphing
y=-1/3x-1
y=-4/3x+2
Click here to see answer by poliphob3.14(115)

Question 443184: Find x and y intercepts and graph the equation plotting the intercepts, show me how you do this step by step please. Create graph.
5x -6y = -45
Click here to see answer by ankor@dixie-net.com(15661)

Question 443423: solve system by graphing
y>4-x/3
please solve quickly :) thanks
Click here to see answer by rwm(914)

Question 443486: I need to know how to find the slope of an equation like 9x-12y=8?
Click here to see answer by rfer(12670)

Question 443483: i need help learning how to work this problem:

y=-4/3x+5

Click here to see answer by MathLover1(6638)

Question 443523: Find the slope if it exists of the straight line containing the pair of points
(4,5)and(9,-9)
Click here to see answer by chriswen(106)

Question 443637: the general form of a quadratic equation is

y= ax +bx+c
1 .draw the graph with equation y= x -3x-4 for value of x from -2 to +5.
2. write the down the minmum value of y and the value of x for this point
3. label the line of symmetry.

Click here to see answer by rwm(914)

Question 443630: What’s the equation of a line that passes through points (0, -1) and (2, 3)?
A. y = 2x − 1
B. y = 2x + 1
C. x = 2y − 1
D. x = 2y + 1
Click here to see answer by rwm(914)

Question 440276: Find the general equation of the line: y = (2)/(3) x - 7
a)2x-3y=21
b)2x+3y=21
c)2x-3y=-21
d)2x+3y=-21
Click here to see answer by rwm(914)

Question 443712: The cost y in dollars, for renting a car from a leasing firm is given by y = 0.6x + 45, where x is the distance driven, in miles. Graph this equation.
Click here to see answer by josmiceli(9697)

Question 443740: Hi. I'm stuck on a problem:
Find the slope of each line whose equation is given. If the slope is undefined, state this.
x = −7
Thank you for your help!

Click here to see answer by scott8148(6628)

Question 443763: Complete the table
equation value of m value of b slope y intercept
y=1
Click here to see answer by rwm(914)

Question 443781: I have 3 questions:
1) I= nE/(nr+R) (solve for n)
2) 1/a + 1/b = c (solve for a). I think the LCD is ab.
To isolate a, I need to divide both sides by bc. Then I get lost!
3) Using the quadratic formula, solve 5x^2+8x+2=0. a=5, b=8, c=2; plug them into the quadratic formula -b plus or minus the square root of(b^2-4ac)divided by 2a.
I am having a hard time with the steps for the answer because I looked up the answer but can't seem to figure the steps correctly. I beleive the answer to be (-4 plus or minus the square root of 6)divided by 5. But I keep coming up with (-8 plus or minus the square root of 24)divided by 10.
I would really appreciate your help! Thanks so much.
Click here to see answer by edjones(7569)

Question 443872: Which is an equation for the line that contains the points (-2, 3) and (2, -1)?
Click here to see answer by josmiceli(9697)

Question 443870: one number is 15 more than another. the sum of twice the larger number and 3 times the smaller number is 180. whats the numbers?
Click here to see answer by chriswen(106)

Question 444168: write the equation -4x + 2y = 1 in slope-intercept form. give the slope and the y-intercept
Click here to see answer by mananth(12270)

Question 444167: graph the equation 4x - 3y = 12
Click here to see answer by mananth(12270)

Question 444158: find the x- and y- intercepts for the graph of of the equation 5x-3y=15
Click here to see answer by mananth(12270)

Question 444166: graph the equation y = -3x +3
Click here to see answer by mananth(12270)

Question 444214: WHAT IS THE ANSWER TO 2Y=4X-16 5Y=4X+8
Click here to see answer by Leaf W.(97)

Question 444242: I am not sure how to resolved this math problem:
Find points of intersection for
2x-4y>6
3x+2y<6
(Solve by graphing and state 1 solution and 1 non-solution)
Thank you very much for your help
Elik
Click here to see answer by benni1013(197)

Question 444510: y=-x+7, y-x=3
find out if the equation lines are perpendicular
Click here to see answer by chriswen(106)

Question 444520: Given that f(x)=x^2-3x+1 and g(x)=sqrt(4-x), find the following if it exist.
(f+g)(3)
Click here to see answer by solver91311(16897)

Question 444602: trying to understand how to do this? my teacher isnt giving us notes and i dont know how to do it.
give 3 solutionsfor the following equations.
y = x + -8
Click here to see answer by stanbon(57407)

Question 444634: Though (0,-1) and perpendicular to 4x-2y=3. Solve.
Click here to see answer by oberobic(2304)

Question 444698: Write the equation of the line which passes through (2, 1) and is perpendicular to x =
Click here to see answer by oberobic(2304)

Question 444723: Sketch a line passing through the point (2, 1) and having
slope -1/2
Click here to see answer by stanbon(57407)

Question 444719: Find the slope–intercept form for the
line that satisfies the given condition:
Slope -4/3, y-intercept -5
Click here to see answer by oberobic(2304)

Question 444779: WRITE Y-3 = 1/2 (X + 4)IN SLOPE INTERCEPT FORM
Click here to see answer by rfer(12670)

Question 444813: I need to find the equation of the line containg (-2, -7) and (-5, -8)
Click here to see answer by mananth(12270)

Question 444804: Solve the two equations below by elimination
3x + 5y = 7
x + y = 2
please help!!
Click here to see answer by mananth(12270)

Question 444834: given the linear equation y=2x-4
find the y corrdinates of the points (0) (-1)and (2)
plot these points and graph on linear equation
Click here to see answer by stanbon(57407)

Question 444803: Hi! could you please help me with this question?
how do you sketch the graph of these two equations and find where they intersect.
a) y = 2x - 1
b) y = 4 - 0.5x
please help :)
Click here to see answer by poliphob3.14(115)

Question 444882: find the slope of the line containing the given pair of points (1,-9)and (-2,-3)
if line is undefined state so.
Click here to see answer by stanbon(57407)

Question 444885: Please help solve this problem
first day 5 adult tickets and 8 children tickets were sold=68
second day 3 adult and 5 childrens=42. how much are the adult tickets
Click here to see answer by stanbon(57407)

Question 445012: Solve for y: -3x + 2Y = -12
Seems too easy, just move everything except the y to the right side of the equation. What am I missing?
Thanks!
Click here to see answer by Alan3354(30993)

Question 445007: Find the slope of the line containing the given pair of points. If the line is undefined, state so.
(-4, -5) and (-4, 5)
I'm needing a little help with this particular problem. Also, would you mind showing how you arrived to your answer, so that I'll understand it. Thank you so much.
Click here to see answer by rwm(914)

Question 444883: A home's back yard drops 9 feet over a horizontal distance of 12ft.
find slope of this back yard. Round answer to two decimals
Click here to see answer by rwm(914)

Question 444828: Find the value of x so the line that passes through (x, 5) and (12, 2) is perpendicular to the line that passes through (0, 1) and (2, 7).
Click here to see answer by rwm(914)

Question 445219: y=-x-5 fin the slope and graphing
Click here to see answer by mananth(12270)

Question 445671: Can u identify the slope and y-intercept, and use them to graph the equation?
An airline frequent-flyer plan offers a bonus of 5000 miles to new members plus 1.5 miles every dollar charged on a credit card endorsed by the airline. The linear equation y=1.5x+5000 represents the number of miles earned after charging x dollars on the credit card.
I tried, but my teacher explains it kinda weird. So far i have y=2 and x=1.9
I'm in 7th grade pre-algebra and this is a take home test and I need a passing grade in this class for my parents to trust me. Thanks.

Click here to see answer by stanbon(57407)

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