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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(28699)  |
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 199333: 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.
Click here to see answer by solver91311(17070)  |
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(6628)  |
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(1512) |
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(12726) |
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(57953) |
Question 203573: 1.Suppose that the width of a rectangle is 5 inches shorter than the length and that the perimeter of the rectangle is 50.
a) Set up an equation for the perimeter involving only L, the length of the rectangle.
Answer:
b) Solve this equation algebraically to find the length of the rectangle. Find the width as well.
2.5x+4y=12 for y
Answer:
Show your work here:
b) When graphed, this equation would be a line. By examining your answer to part a, what is the slope and y-intercept of this line?
Slope = ______
Y-intercept = _____
c) Using your answer from part a, find the corresponding value of y when x = 16.
Click here to see answer by stanbon(57953) |
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