A formula in the form y = mx + b models the value, y, of a new car x years after the initial purchase in 2017. Would you expect m to positive, negative, or zero?
Slope, m, would be negative.
As the amount of time increases {the xaxis}, the value of the car would decrease {yaxis} Or, in terms of rise over run, as the line runs to the right on the xaxis, it falls on the yaxis. Ask the House
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