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

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Tutors Answer Your Questions about Linear-equations (FREE)

 Question 285008: (4,0)(0,2) points on the line . 1.Find y when x=6 2. Find x when y=-1 3. Find the x-intercept 4. Find the slope of the line 5. Find the equation of the line. 6. Find y when x =-2 7. find x when y = -5 8. Find the y intercept. Click here to see answer by Edwin McCravy(9717)

 Question 285278: How do you graph this function 3x^3+10x^2 using a table please. Click here to see answer by stanbon(60771)

 Question 285325: How do you graph a line when you only know the slope? Example slope of -5. Click here to see answer by solver91311(18785)

 Question 285372: i was asked draw a trend line and write an equation for my trend line in slope-intercept point. The problem is that i don't understand what's a trend line is and how to write an equation for that. this is the problem: A giraffe was 1ft tall at birth. 7 ft tall at the age of 4, and 11 1/2 ft tall at the age of 7. i was asked to make a scatter plot and i did. Please help me with my homework :( Click here to see answer by oberobic(2304)

 Question 285402: Is there a simple way of remembering slope-intercept and point-intercept? Such as a word or phrase. Thank you Click here to see answer by richwmiller(10276)
 Question 285402: Is there a simple way of remembering slope-intercept and point-intercept? Such as a word or phrase. Thank you Click here to see answer by oberobic(2304)

 Question 285460: 2x+3y=9 solve for y Click here to see answer by edjones(7794)

 Question 285535: Find the equation of a line passes through the point (-8,4) and is perpendicular to the line y =-3x + 2 Click here to see answer by checkley77(12569)

 Question 285593: After graphing 4x-2y=5 and y=x how many points do they intersect? Click here to see answer by Alan3354(34677)
 Question 285593: After graphing 4x-2y=5 and y=x how many points do they intersect? Click here to see answer by toidayma(44)

 Question 285591: find the slope and y intercept of the line. write fractional answers in lowest terms. 5y+9x+7 = 18+9x Click here to see answer by Alan3354(34677)

 Question 285622: Find an equation of the line containing the given pair of points. (-5,-2) and (-3,-1). The equation of the line in slope-intercept form is y= Click here to see answer by Alan3354(34677)
 Question 285622: Find an equation of the line containing the given pair of points. (-5,-2) and (-3,-1). The equation of the line in slope-intercept form is y= Click here to see answer by richwmiller(10276)

 Question 285638: Solve and graph: -|x|-3≤-5, D={integers} Click here to see answer by stanbon(60771)

 Question 285637: write equation in slope intercept form 3x - 4y = 80 Click here to see answer by stanbon(60771)
 Question 285637: write equation in slope intercept form 3x - 4y = 80 Click here to see answer by richwmiller(10276)

 Question 285650: Find an equation of the line that has a y-intercept of 2 that is parallel to the graph of the line 4x+2y=8 Click here to see answer by stanbon(60771)
 Question 285650: Find an equation of the line that has a y-intercept of 2 that is parallel to the graph of the line 4x+2y=8 Click here to see answer by JBarnum(2088)

 Question 285685: What is the effect on the graph of the equation y = x^2 + 1 when it is changed to y = x^2 + 5 Click here to see answer by richwmiller(10276)

 Question 285679: Write an equation of the line containing the given point and perpendicular to the given line. (8,-6); 3x+5y=8. The equation of the line is y= Click here to see answer by richwmiller(10276)
 Question 285679: Write an equation of the line containing the given point and perpendicular to the given line. (8,-6); 3x+5y=8. The equation of the line is y= Click here to see answer by nyc_function(2741)

 Question 285658: given the functions: f(x) = x2 - 3x +5 and g (x) = 5x - 1; find f (2) Click here to see answer by nyc_function(2741)

 Question 285660: given the functions: f(x) = x2 - 3x +5 and g (x) = 5x - 1; find f (2) thank you so much i am so lost Click here to see answer by richwmiller(10276)

 Question 285659: Life Span Some scientists believe there is a limit to how long humans can live.* One supporting argument is that during the last century, life expectancy from age 65 has increased more slowly than life expectancy from birth, so eventually these two will be equal, at which point, according to these scientists, life expectancy should increase no further. In 1900, life expectancy at birth was 46 yr, and life expectancy at age 65 was 76. In 2000, these figures had risen to 76.9 and 82.9, respectively. In both cases, the increase in life expectancy has been linear. Using these assumptions and the data given, find the maximum life expectancy for humans. Click here to see answer by stanbon(60771)
 Question 285659: Life Span Some scientists believe there is a limit to how long humans can live.* One supporting argument is that during the last century, life expectancy from age 65 has increased more slowly than life expectancy from birth, so eventually these two will be equal, at which point, according to these scientists, life expectancy should increase no further. In 1900, life expectancy at birth was 46 yr, and life expectancy at age 65 was 76. In 2000, these figures had risen to 76.9 and 82.9, respectively. In both cases, the increase in life expectancy has been linear. Using these assumptions and the data given, find the maximum life expectancy for humans. Click here to see answer by ankor@dixie-net.com(16523)

 Question 285464: 4x-12y=8 solve for x Click here to see answer by nyc_function(2741)

 Question 285718: I am working on systems of linear equations. (Solve the system by graphing my book says to use the y-intercept and the slope to graph each line. The equations are: y = x-3 and y = x+1 I got a intersect at (2, 0) When I do a check I do not believe that this satisfies both equation. Can you detail out step by step instruction on how to solve this problem. I might be getting the y-intercept and the slope information data wrong. I am just not sure. Thank you. Click here to see answer by stanbon(60771)

 Question 285717: Write an equation of the line containing the given point and parallel to the given line (6,8); x+4y=7 Click here to see answer by richwmiller(10276)

 Question 285802: write the lope intercept form of the equation of each line x-3y=6 Click here to see answer by checkley77(12569)

 Question 285779: How do I graph lines using y-intercept and slope on y = 3x - 2? Click here to see answer by checkley77(12569)

 Question 285832: Solve for u. -7(u – 3) = -3u + 17 Click here to see answer by stanbon(60771)
 Question 285832: Solve for u. -7(u – 3) = -3u + 17 Click here to see answer by Grinnell(63)

 Question 285777: How do I write the equation y = 3x -5 in standard forms using only integers? Click here to see answer by Alan3354(34677)

 Question 285776: Find the slope and y-intercept for each x + 2y = 3 Click here to see answer by papugai(18)
 Question 285776: Find the slope and y-intercept for each x + 2y = 3 Click here to see answer by richwmiller(10276)

 Question 285833: find the slope of (7,5) (2,-4) Click here to see answer by stanbon(60771)

 Question 285866: Factor 25y^2 - 9 Click here to see answer by richwmiller(10276)
 Question 285866: Factor 25y^2 - 9 Click here to see answer by stanbon(60771)

 Question 285870: Could You Graph y=-5x^2-5 Click here to see answer by stanbon(60771)

 Question 285164: Write the equation of the line that passes through (-2,-8) that is perpendicular ro x=4y+3 Click here to see answer by Alan3354(34677)

 Question 285848: Simplify (3y - 7)^2 Click here to see answer by user_dude2008(1861)

 Question 285952: y=30x+8000 solve for y Click here to see answer by papugai(18)
 Question 285952: y=30x+8000 solve for y Click here to see answer by oberobic(2304)

 Question 285985: decide whether the pair of lines is parallel perpendicular or neither 2x+3y=9 3x-2y=8 Click here to see answer by oberobic(2304)

 Question 286066: what is the linear feet of 18 feet by 1 and half feet Click here to see answer by richwmiller(10276)