M.s smith is angry at her students and decides to take 5 point off each students final exam. Write and solve and equation to find ‘x’ the original grade of a student whose new grade is a 73

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A linear function can just be a constant, or it can be the constant multiplied with the variable like x or y. If the variables are of the form, x2, x1/2 or y2 it is not linear. The exponent over the variables should always be 1.