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Tutors Answer Your Questions about Coordinate-system (FREE)
Question 192947: here is the problem, but I am not sure if it is going to read correctly or not, any help would bea pparecaited as I have nearly losted it on this one:
For the function f(x) find f(-2) and graph the function.
f(x)= {3x+5 x< -2
{x+2 x>= -2
*note the bracket is just one large bracket on the left not two*
Click here to see answer by jim_thompson5910(13794)   |
Question 198666: plot the graph of each pair of equations. calculate and show the intercepts on the graph. show and explain the solution for each system of equations.
1.2x-3y=5 and 4x-6y-21
2.4x-6y=12 and x-5y=10
3.8x-4y=12 and -4x+2y=-6
Click here to see answer by arallie(162) |
Question 199334This question is from textbook
: 1.f(x) = 5x
f(a - 2)
5(a-2) - 1
5a - 10 - 1
5a - 11
2.f(x) = 4x+2
3.f(x) = (1/3)x
4.f(x) = log5x
Can someone help me justify these answers. Is the first one right?This question is from textbook
Click here to see answer by solver91311(5072)  |
Question 199333This question is from textbook
: For the exponential function ex and logarithmic function log x, graphically show the effect if x is halved. Include a table of values for all four functions.
Could someone tell me if this is correct?
e^x becomes e^(x/2) is x is halved
ln x becomes ln(x/2) is x is halved.
Start out with x = 4 and compare what you get with x = 2 and x = 1.
ln4 = 1.386
ln2 = 0.693
ln1 = 0
Each time x doubles, ln x increases by 0.693
e^4 = 54.60
e^2 = 7.389
e^1 = e = 2.718
Each time x doubles, e^x gets squared. This question is from textbook
Click here to see answer by solver91311(5072) |
Question 201967: well its a two part question i answered a already but am finding it impossible to answer b i was hoping you could help me out in the first part you had to show that p (4,2) was equidistant from a (9,2) and b (1,6). i did this by graping the points and then using the distance formula from a to p and b to p which when rounding p to b is equidistant. however the second part says this:
if (2,k) is equidistant from a and b find the value of k.
thanks so much for any help you could provide me with.
Click here to see answer by scott8148(3385)  |
Question 202116: write an equation of the line that passes through the given point and is parallel to the given line. Write the answer in a slope intercept form (0,4) 8y -48x=3
y= -1/6x + 6
y=-1/6x + 4
y=6x -4
y= -1/4x + 6
y=6x + 4
Click here to see answer by jojo14344(1483) |
Question 202879: Please help me to understand how to understand and work out this problem I have many similar in composition to do. I just need to grasp the concept more thoroughly.
Problem: Find the equation of the line passing through the points (-2, -8) and (0, -2). Write your equation in slope-intercept form.
Thank You for the Help.
Scott Davey
Click here to see answer by rfer(2688) |
Question 203309: 1. How do we write the equation of a horizontal line? What would be an example?
2. How do we write the equation of a vertical line? What would be an example?
3. The points (1, 3), (2, 5), (8, 17), (50, 101), and (1000, 2001) all lie on line M.
The points (1, -1), (2, -3), (8, -15), (50, -99), and (1000, -1999) all lie on line N.
a. Form the equations of both the lines. Show your work.
b. What are the co-ordinates of the point of intersection of lines M and N?
c. Write the co-ordinates of the intersections of lines M and N with the x-axis.
d. Write the co-ordinates of the intersection of lines M and N with the y-axis.
Click here to see answer by stanbon(26297) |
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