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bonufazy [111]
3 years ago
6

Which of the following representations are functions?

Mathematics
1 answer:
allsm [11]3 years ago
4 0

Answer: A and B only

Step-by-step explanation:

In function, for one value of x there must be only one value of y.

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What is the slope of a line that passes through the points (-5,-3) and (9,-6)
kipiarov [429]
To find the slope given two points, you need to subtract the two y values over the two x values
(-5,-3)  (9,-6)
-5 will be x1, and -3 will be y1. 9 will be x2, and -6 will be y2. You then need to put the numbers in the correct place in the equation.
y2-y1      -6-(-3)     -9
-------- =   -------- =  ----
x2-x1       9-(-5)     14
Now that we have the slope (-9/14) you can use one of the coordinates to find the value of b.
Let's use (9,-6).
-6=-9/14(9)+b
-6=-81/14+b
+81/14
b=-3/14
Your final equation is y=-9/15x-3/14


7 0
3 years ago
The girl went to the store at 10:45 and lasted 1 hour and 30 minutes . At what time did she come out of the store
mars1129 [50]
She left at 12:15.  10:45 plus 1 hour= 11:45 + 15 min +12 +15= 12:15
4 0
3 years ago
What are the solutions to the quadratic equation below? x^2+34x-72=0
Annette [7]

Answer:

( x + 36 ) ( x - 2 ) = 0

Step-by-step explanation:

x^2 + 36x - 2x -72 = 0

x ( x + 36 ) - 2 ( x + 36 ) = 0

( x + 36 ) ( x - 2 ) = 0

7 0
3 years ago
Adam's father is 412 times older than Adam. Adam's grandfather's age is 14 years less than twice Adam's fathers age. The sum of
FromTheMoon [43]

Answer:

d

Step-by-step explanation:

don't know how to explain it, not even sure of the answer, but just wait someone will help u out,believe me u will find.

8 0
3 years ago
Can you help me it’s. 2 part question I can only add one picture at a time
snow_lady [41]

Recall the definition of the composition between two functions:

(f\circ g)(x)=f(g(x))

Similarly, but not always the same:

(g\circ f)(x)=g(f(x))

Use the rules of correspondence of the functions f and g to find the compositions:

\begin{gathered} f(x)=6x-10 \\ g(x)=8-4x \end{gathered}

Then:

\begin{gathered} (f\circ g)(x)=f(g(x)) \\ =6\cdot g(x)-10 \\ =6(8-4x)-10 \\ =6\cdot8-6\cdot4x-10 \\ =48-24x-10 \\ =-24x+38 \\  \\ \therefore(f\circ g)(x)=-24x+38 \end{gathered}

On the other hand:

\begin{gathered} (g\circ f)(x)=g(f(x)) \\ =8-4\cdot f(x) \\ =8-4(6x-10) \\ =8-4\cdot6x-4\cdot-10 \\ =8-24x+40 \\ =-24x+48 \\  \\ \therefore(g\circ f)(x)=-24x+48 \end{gathered}

Therefore, the answers are:

\begin{gathered} (f\circ g)(x)=-24x+38 \\ (g\circ f)(x)=-24x+48 \end{gathered}

8 0
1 year ago
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