A researcher monitoring the power from the solar panels on a Mars lander has developed a linear model for the available power output in watts, P, against the number of days since landing, d, to help predict the change in power due to dust accumulation. The equation is P=215.4−0.422d. Based on the model, by how many watts will the power change over 10 days?
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.
A researcher monitoring the power from the solar panels on a Mars lander has developed a linear model for the available power output in watts, P, against the number of days since landing, d, to help predict the change in power due to dust accumulation. The equation is P=215.4−0.422d. Based on the model, by how many watts will the power change over 10 days?
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