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kirza4 [7]
3 years ago
13

Match the range of the function f(x) = x2 2x − 1 to its domain.

Mathematics
1 answer:
Ivan3 years ago
7 0
F(x) = x^2 + 2x -1

Domain all real number

Range: all real numbers equal or greater than -2.

To find the range you need to find the vertex of the parabole, which is (-1,-2) and use the fact that, given that the coefficient of x^2 is positive, the funcion open upwards (which means that the vertex is a global minimum).

To find the vertex you use the quadratic formula to find the roots and then the x-coordinate of the vertex is in the middle of the two roots.
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What are the x and y-intercepts of the line described by the equation?
tatuchka [14]

Answer: x=4.41 y= -7.35

Step-by-step explanation:

Pretty basic just graph them using Desmos...

Showing your work you would need to get x on one side then y on the other.

Because 3y is positive I personally like to use that one first. The inverse operation of 3y is divide so you divide 3y by 3 and the 3s cancel out. Divide -22.05 by 3 and you get -7.35. Which is your y value.

Finding X is a bit more difficult, you need to divide by -5 which is the obvious inverse operation. So, -22.05/-5 and you get 4.41. Which is your X value.

Any further questions feel free to contact me.

-Vy

5 0
3 years ago
Bernie bought a pair of shoes at the store when they were having a 30% off sale. If the
Ne4ueva [31]
It’s $12.60 dollars!!!
3 0
3 years ago
Zed has twice as many fish as dmitri.dmitri has 3 fish .write it in multiplication equation
Allushta [10]
3x2=x would be your equation
6 0
3 years ago
Click an item in the list or group of pictures at the bottom of the problem and, holding the button down, drag it into the corre
iren2701 [21]

8x - 1 < 15 \\ 8x < 16 \\ x < 2
the answer is x<2




good luck
7 0
3 years ago
Read 2 more answers
Pleaseeee help!!!! I will mark you as brainlinest for correct answer!!!!!!!!
Alborosie
The graph you chose has a y intercept of 5. In other words, the point (0,5) is on that graph. However, if we plugged x = 0 into the function f(x), we get

f(x) = 3*5^x
f(0) = 3*5^0
f(0) = 3*1
f(0) = 3

So the point (0,3) is actually on the graph. The graph is increasing. So the answer is the upper left corner (instead of the upper right corner)
5 0
3 years ago
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