Which of these items is a tax deduction?

I'll just provide you some tax deductions.
1) sales tax. 
2) state tax
3) health insurance premiums *subject to limitations
4) tax savings for teachers *up to $250 for materials
5) charitable gifts
6) lifetime learning
7) unusual business expense
8) looking for job at the same field *cost incurred during job hunting can be deductible but still subject to limitation
9) self-employed social security

Step-by-step explanation:

Let y be the value in dollars and x be the number of euros.

If we plot y on the vertical axis and x on the horizontal axis, a straight line would be formed. The slope of the straight line would be

Slope, m = (36 - 9)/(32 - 8)

m = 27/24 = 1.125

The equation of the straight line can be represented in the slope-intercept form, y = mx + c

Where

c = intercept

m = slope

To determine the intercept, we would substitute x = 8, y = 9 and m = 1.125 into y = mx + c. It becomes

9 = 1.125 × 8 + c = 9 + c

c = 9 - 9 = 0

The equation showing the relationship is

y = 1.125x