![miriamnelson7545](/avatars/42342.jpg)
miriamnelson7545
11.07.2019 •
Mathematics
(40 points) plz asap! domain and range! click link
Solved
Show answers
More tips
Answers on questions: Mathematics
- M Mathematics Anavi was bored on a rainy day and decided to flip a coin and see how many times it lands heads. She flipped the coin 25 times and it landed on HEADS 15 times. What is the...
- M Mathematics What is GC? I need help Please!...
- M Mathematics 30 centimeters 3 minutes...
- M Mathematics 4o Pani of land was bought for rupees 1250000 three years ago if one ropani of land be sold for Rupees 160000 at present at what percent is value depreciated....
- M Mathematics When Fritz drives to work his trip takes 36 minutes, but when he takes the train it takes 20 minutes. Find the distance Fritz travels to work if the train travels anave 48...
- M Mathematics In the diagram below BC= EC and m...
- M Mathematics Joan has a piece of fabric in the shape of a triangle. She measures two of the angles of the triangle, and each one is 60⁰. She creates two new triangles by cutting the fabric...
- M Mathematics Madison is calculating the area of a composite figure. The figure is made up of a rectangle with a base of 5 and a height of 3 and a triangle with a base of 5 and a height...
- M Mathematics Which first step most directly leads to the solution of the equation below? x^2 – 16 = 65 A. Add 16 to both sides of the equation.B. Add -x^2 to both sides of the equation....
- M Mathematics The equation y = x+5 represents the length y (in centimeters) of a snake x months after it hatches. a. graph the equation b. Find the length of the snake after 5 months...
Ответ:
For finding the values, we look at the x - value given. Then we move to where it is on the graph and find its y value.
In part A, when x = -4, the y value looks to be between -3 and -4. Let's put it in the middle and estimate it at -3.5
In part B, when x = 1, the process is similar. Go to x = 1, then go to the graph, then go to the y value. That looks to be at y = -3.
In part C, when x = 4, there are three values that work. We are actually answering part D at this point because we can tell this graph is NOT a function of x. When you have an x -value that goes into the function, you have to get EXACTLY ONE thing that comes out. I bolded "EXACTLY ONE" because those words make the definition work. Two or more, not a function. One, it's a function. None, and it's not in the domain at all. There are three values of y that work, and they are - from top down, 3.5, 0, -2.5.
We answered Part D when observing part C. It's NOT a function because there is not EXACTLY ONE value of y for an x.
And finally, because it's not a function - finding the domain and range is a waste of time. You can't find the domain of something that's not a function - you need a function to have a domain.
Hope that helps.
Ответ:
ok for this what we need to do is just do the equation
y=2x+3
with the x inserted
y=2*-2+3
y=-1
y=2*0+3
y=3
y=2*1+3
y=5
y=2*3+3
y=9
this is the answer from left to right
y=-1,y=3,y=5,y=9