Questions on Algebra: Graphs, graphing equations and inequalities answered by real tutors!

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Question 634146: Factor each polynomial completely
4-r^2
a^3-2a^2+5a-10
Please help ASAP thanks so much for your time!
Click here to see answer by richwmiller(17219)

Question 634271: A line has slope -4 and y-intercept (0, -2). What is the slope-intercept form of the equation of this line?

Click here to see answer by rfer(16322)

Question 634271: A line has slope -4 and y-intercept (0, -2). What is the slope-intercept form of the equation of this line?

Click here to see answer by reviewermath(1029)

Question 634311: can u help me graph y-2=3(x+4)
Click here to see answer by reviewermath(1029)

Question 634252: Graph for 3x + y = -3
Click here to see answer by graphmatics(170)

Question 634537: find the distance between the pair of points (-1,-4) and (-5,-7).
Find the midpoint of the line segment with the given end points: (2,1) and (6,8).
Find the distance between thepair of points (-2,-6) and (7,-3).
Write the standaed form of the quation of the circle with the given center (-2,-4) and radius 6.
Click here to see answer by sachi(548)

Question 634645: I was absent last week and its come back to bite me in the butt. This is the question best I know how to type it in. Mostly word for word.
If f(x)=3x-4 and g(x)=x+2 find f.g.
Thanks

Click here to see answer by jim_thompson5910(35256)

Question 634656: I think this is a graphing question:
Find the coordinates of the vertex for the parabola f(x)=-2x^2-2x.
Click here to see answer by ewatrrr(24785)

Question 634646: Graph the equation using the x and y intercepts.
x/3-y/7=1
Click here to see answer by Alan3354(69443)

Question 634641: Use a number line to graph the solution set to the inequality.
xis greater than or equal to -2
Click here to see answer by ewatrrr(24785)

Question 634706: Graph the following: 2x+3y=6
Show step-by-step, please.
Click here to see answer by nyc_function(2741)

Question 634911: write the augmented matrix corresponding to each system of equations.
3x + 7y- 8z = 5
x + 3z = -2
4x - 3y = 7
Click here to see answer by ewatrrr(24785)

Question 634930: Graph the linear equality.
x>y
Click here to see answer by jim_thompson5910(35256)

Question 634938: use the slope intercept form to graph the equation x=4\5 y
Click here to see answer by ewatrrr(24785)

Question 635132: Is there a relationship between the sign (positive or negative) of the slope of a line and the angle the line makes with the x-axis?
For example, if you graph y = 3x+5, versus the graph of y = -3x+5

Click here to see answer by ewatrrr(24785)

Question 634375: F(x)=x+1
g(x)=-8x+10

Click here to see answer by asuar010(338)

Question 635159: What is the slope of a line with the coordinates of (5,0) (0,4)?
Click here to see answer by Tatiana_Stebko(1539)

Question 635199: For the following system, if you isolated x in the first equation to use the Substitution Method, what expression would you substitute into the second equation?
-x + 2y = -6
3x + y = 8
PLEASE HELP
Click here to see answer by richwmiller(17219)

Question 635219: Sketch the graph of the parabola.
y=x(squared)+5
Click here to see answer by ewatrrr(24785)

Question 635286: -4(-2-x)<6x+19-11-2x
Click here to see answer by jim_thompson5910(35256)

Question 635322: Solve the system by graphing. If there isn't a unique system to the solution, state the reason. 5x+y=-4 4x+4y=16
Click here to see answer by mananth(16946)

Question 635575: Find the equation of the line containing the point (-3, -12) and having a slope of -4.
Click here to see answer by lwsshak3(11628)

Question 635546: |4y-9| >7
Click here to see answer by jim_thompson5910(35256)

Question 635580: Graph the following function using transformations. Be sure to graph all of the stages on one graph. State the domain and range. y=sqrt(x-3)+8
Click here to see answer by MathLover1(20849)

Question 635606: f(x) = 3x - 1
How should this be graphed? I've tried but I'm not coming up with the graphs that they show to pick from. Thanks!
Click here to see answer by reviewermath(1029)

Question 635627: x>y
Click here to see answer by unlockmath(1688)

Question 635645: Y= -4x+3
Click here to see answer by jim_thompson5910(35256)

Question 635646: Y= 1/2x -6
Click here to see answer by jim_thompson5910(35256)

Question 635639: Write an equation in slope-intercept form of the line through (1,3) and (-3,7)
Click here to see answer by jim_thompson5910(35256)

Question 635648: y= 2/3x-1
Click here to see answer by jim_thompson5910(35256)

Question 635650: x=-3
Click here to see answer by jim_thompson5910(35256)

Question 635649: 6x-y=2
Click here to see answer by jim_thompson5910(35256)

Question 635661: Solve x^2=2x+3 by graphing
Click here to see answer by reviewermath(1029)

Question 635611: A tennis ball is thrown with an initial upward velocity of 64 feet per second. How long will it take for the ball to hit the ground? Use the formula in which the height above ground after t seconds is given by the quadratic function h = vt � 16t2, where h represents the height of the object in feet, and v represents the object's initial velocity in feet per second.
The answer is supposed to be in seconds, but I am not at all sure how to get there.
Click here to see answer by lwsshak3(11628)

Question 635718: Radical Expression..I need assistance with this please..thanks so much..
If Mary can paint one room in 100 minutes, and Jake can paint one room in 150 minutes, how long will it take if they work together?
Click here to see answer by ewatrrr(24785)

Question 635773: Solve by graphing 3x+y=2 and y=2x-2 and estimate the point of intersection.
I am homeschooled & my parents & I have been trying to figure this one out. We have been able to find the graph line for 3x+ y=2 but not the 2nd. The teacher's guide give us the final graph with coordinates of (4/5, -2/5). Thank you,
Click here to see answer by ewatrrr(24785)

Question 635817: Having problems with this question:
Find the coordinates of the vertex for the parabola given by the equation f(x)=-3x^2-x-1.
Click here to see answer by Alan3354(69443)

Question 635839: find the slope intercept equation of the line that has the given characterstics?
slope 0 and y interceept (0,8)
Click here to see answer by nerdybill(7384)

Question 635864: Given the linear equation y = 1/2 x -5 , find the y-coordinates of the points (-8, ), (-2, ), and (4, ). Please show all of your work. Plot those points and graph the linear equation
Click here to see answer by Alan3354(69443)

Question 635856: Find the x and y intercepts and graph the equation plotting the intercepts. Please show all of your work. -5x + 9y = -45
Click here to see answer by Alan3354(69443)

Question 635851: Find the slope and y-intercept of the line in the given equation. y = -11 x -5

Click here to see answer by jim_thompson5910(35256)

Question 635886: Given the linear equation y = 7/6x + 1, find the y-coordinates of the points (-6, ), (0, ), and (6, ). Please show all of your work. Plot those points and graph the linear equation.
Click here to see answer by solver91311(24713)

Question 635942: My math problem states:
{9x + 9y=0}
{5x - 2y= 14}
The instructions are to solve the system of equations by graphing, but I am stuck on how to solve the problem. I have tried several ways but neither equal correctly, please help :-)
Click here to see answer by mananth(16946)

Question 636142: You might want to draw up a number line and then place two points on that line. Multiply each number by -1 and see where that new point ends up. Look at the relationship between the original points, and compare that with the relationship of the last two points.
Click here to see answer by ewatrrr(24785)

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