Aballoon is floating above a lake and a sunken canoe is below the surface of the lake.The balloon’s vertical position is 12 meters and the canoe’s is-4.8meters.The equation 12+d =-4.8 represents this situation. 1.What does the variable d represent? 2.What value of d makes the equation true? Explain your reasoning.

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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.