3 years ago

Write each of the following expressions without using absolute value. |z−7|−|z−9|, if z<7

1 answer:

4 0

Here is one way.

$\left\{ \begin{array}{rcl}-2&\mbox{for}&z < 7\\2(z-8)&\mbox{for}&7\le z\le9\\2&\mbox{for}&9 < z\end{array}\right\,$

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Elena L [17]

Answer:

Step-by-step explanation:

70%

5 0

3 years ago

allsm [11]

Answer:

The function given is non-linear.

Step-by-step explanation:

The slope between (0, 2) and (2,6):

$\frac{6-2}{2-0}=\frac{4}{2}=\boxed{2}$

The slope between (2,6), and (3, 12):

$\frac{12-6}{3-2}=\frac{6}{1}=\boxed{6}$

Since the slopes are not equal to each other, the function is non-linear. A linear function's slope must stay consistent.

Hope this helps.

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3 years ago

katrin2010 [14]

Y=mx+b
m=slope
b=yintercept

given
y=-2x+3 and
y=-4x-1

first equation is slope -2 and yintercept 3
second is slope -4 and yintercept -1

3rd option

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4 years ago

timofeeve [1]

-1.5 ------ f(x) = 3(-1.5) - 5
= -4.5 -5
= 9.5

2 -------- f(x) = 3(2) - 5
= 6 -5
= 1

4 -------- f(x) = 3(4) - 5
= 12 - 5
= 7
(9.5, 1 , 7)

6 0

3 years ago

NikAS [45]

Answer:

I'm pretty sure it's C

Step-by-step explanation:

To be a function no two inputs can have the same output. An input can have two different outputs. So it would again be C

7 0

3 years ago