Maths

Please, I still need help with this.

I need to make tables of values for both horizontal and vertical stretching, but I wasn't in class and missed the lesson. I don't really understand how to get the values; at first I figured you'd get the value of y by just pluging in whatever value of x you're given to y=f(x), but this doesn't seem to work. My book shows completely different answers, but doesn't explain how to get them.

I'm given a table of values for y=f(x) with (-4,0), (-2,4), (0,-4), (2,4), (4,0). Then, I am to find the y values for y=2f(x) and for y=1/2f(x) and for y=f(2x) and y=F(1/2x).

I'm guessing that if there's an actual number inside the parenthesis, it's a horizontal stretch, but I still can't figure out how to actually do it.

1. you are given y=f(x) and data points for x,y.

for y=2(f(x)) notice I double the original y
(-4,0),(-2,8),(0,-8),(2,8) you do the last.
Now for y=1/2 (f(x) I will start you off.
(-4,0),(-2,2), (0,-2), you finish.
For y=(f(2x)) there are limited data points you can do. For instance, the first point given was -4, you do not know what f(-8) is so skip it.
(-2,0) remember for -2, y is f(-4).
next one (0,-4), (2,0) and that is all you can do.

posted by bobpursley

Similar Questions

1. Maths

I need to make tables of values for both horizontal and vertical stretching, but I wasn't in class and missed the lesson. I don't really understand how to get the values; at first I figured you'd get the value of y by just pluging

Make a word document with the key points (in tables/charts) for the following functions, given in the form y=asink(x+d)+c Start with multiplication/division (multiply ‘y’ by a, divide ‘x’ by k) Then add c to the y values,
3. Cal

10. For f(x)=lnx, construct tables, rounded to four decimals, near x=1, x=2, x=5, and x=10. Use tables to estimate f'(1), f'(2), f'(5) and f'(10). Then guess a general formula for f'(x). I don't understand how to do number 11 11.
4. Cal

10. For f(x)=lnx, construct tables, rounded to four decimals, near x=1, x=2, x=5, and x=10. Use tables to estimate f'(1), f'(2), f'(5) and f'(10). Then guess a general formula for f'(x). I don't understand how to do number 11 11.
5. Math

Betty has the option of using three types of tables in her coffee shop: square tables with a side length of 42 inches; rectangular tables 26 inches wide and 73 2/3 inches long; and round tables with a diameter of 36 inches. Which
6. mathematics

it takes 12 men to make 12 tables in 9 hours. how long will it take 8 men to make 32 tables?
7. Math

The library at Miller Elementary School has an odd number of tables. Some tables will seat 4 students and some tables that will seat 6 students. A total of 32 students can sit at the tables with no empty seats. What is the number
8. Algebra

Okay, so I'm asked to "Complete the table for each function". 1. f(x) = x^2 x = 0, +/-1, +/-2, +/-3 y = 0, 1, 4, 9 So, I plugged each of the x values into the equation and got the y values that are shown above? Are those correct,
9. Math

The Mega Middle School cafeteria has small square tables that seat one person on each side. How many of these tables must be pushed together to make one long table that seats 18 people?
10. Math

The Eatery Restaurant has 200 tables. On a recent evening, there were reservations for fraction 1/10 of the tables. How many tables were reserved?

More Similar Questions