What is the slope of the function, represented by the table of values below?

Answer:
The correct option is A....
Step-by-step explanation:
We have a table of x,y pairs. To compute the slope we can use any two pairs, say the first two, and plug them into our formula:
m = y2-y1 / x2-x1
m = 5-13/ 0-(-2)
m = -8/0+2
m = -8/2
m = -4
We can check this answer by using a different pair: Take the last two pairs.
m = -27-(-15)/ 8-5
m = -27+15/3
m = -12/3
m = -4
Thus the slope is -4
The correct option is A....
Answer: Option A
[tex]m=-4[/tex]
Step-by-step explanation:
First we calculate the slope for the first two values of the table:
[tex]x_1 = -2,\ y_1=13[/tex]
[tex]x_2 = 0,\ y_2=5[/tex]
The formula to calculate the slope m is:
[tex]m=\frac{y_2-y_1}{x_2-x_1}[/tex]
So
[tex]m=\frac{5-13}{0-(-2)}[/tex]
[tex]m=-4[/tex]
Now we calculate the slope for following values of the table:
[tex]x_1 = 0,\ y_1=5[/tex]
[tex]x_2 = 3,\ y_2=-7[/tex]
[tex]m=\frac{-7-5}{3-0}[/tex]
[tex]m=-4[/tex]
The slope is always the same, so the values in the table represent those of a linear function of slope [tex]m = -4[/tex]