A road perpendicular to a highway leads to a farmhouse located a = 1.5 km away. An automobile travels past the farmhouse at a speed of v = 81 km/h. How fast is the distance between the automobile and the farmhouse increasing when the automobile is 3.5 km past the intersection of the highway and the road? Let I denote the distance between the automobile and the farmhouse, and let s denote the distance past the intersection of the highway and the road. a v km/h Automobile (Use decimal notation. Give your answer to three decimal places.) speed of I at given s-value: 74.449 km/h

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Equations and Inequations

Equations and inequalities describe the relationship between two mathematical expressions.

Linear Functions

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.