Let x represent the taxpayer’s taxable income and y represent the tax. Express the line of the Schedule D worksheet below as a linear equation in y = mx + b form. Use interval notation to define the income range on which each of your equations is defined.

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Section D-Use if your filing status is Head of household. Complete the row below that applies to you Taxable income. If line 43 is- At least $100,000 but not over $129,600 (a) Enter the amount from line 43 (b) Multiplication amount x 25% (0.25) (C) Multiply (a) by (b) $ (d) Subtraction amount $5,677.50 Tax. Subtract (d) from (c) Enter the result here and on Form 1040, line 44 $