Question

What is the slope of the linear function in line 28

Answer 1

line 12 is on this table

Answer 2

I'm not sure what you mean. Slope is rate of change so we are trying to find the rate of change of what two quantities?

Answer 3

sorry i actually meant to say line 28 but that's why this question is posted here.. I don't really get it

Answer 4

I think that for which unit in x (left side of the column) you increase the value of the right side to the origin...

is this correct?

Answer 5

What does that .28E mean?

Answer 6

0.28 x E(earnings)

Answer 7

Ok. Now I get it.

Answer 8

oh okay :D

Answer 9

Find the taxes on the top of the income bracket. In other words take .28 times 84399.99

Answer 10

Take .28 times the low end of the income bracket: .28 x 57325

Answer 11

Then divide the difference in taxes by the difference in income:
\[m=\frac{.28(87349.99)-.28(57325)}{87349.99-57325}\]

Answer 12

so just do that m = equation and i get my slope?

Answer 13

yes

Answer 14

I got .5597 and I have to go now.

Answer 15

i must be using the wrong calculator something
i got .28 which makes no sense

Answer 16

@Joshuam1 please, consider my explanation:

The right side of the table is a equation line (I'm brazilian, I don't know if the correct is straight). id. y= 0.28E - 4909.75 for the line 28.

so, a line may be express with this:

y= mx + b

so, 0.28 is the slope.


what @Mertsj did is near correct, he only didn't subtract -4909.75 of the two terms in numerator! This is equals to 0.28 !!

this is the calculus to get the tangent of a triangle

tan(alpha) = opposite site / adjacent side

when you do 87349.99−57325 you get the adjacent side
and when you do y =.28(87349.99) - 4909.75 you get the most high point of y
and y =.28(57325) - 4909.75 the most low
the diff of the two is the opposite side