Payton was standing on a bridge over a canal and threw a rock into the water. The height of the rock (in feet) at any time t (in seconds) can be modeled by the equation below: h(t) = -16t2 + 80t +25 (The 2 after 16t2 should be squared) Approximately how many seconds did it take for the rock to hit the water? 3.9 sec 6.2 sec 7.2 sec 5.3 sec
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.
Payton was standing on a bridge over a canal and threw a rock into the water. The height of the rock (in feet) at any time t (in seconds) can be modeled by the equation below:
h(t) = -16t2 + 80t +25 (The 2 after 16t2 should be squared)
Approximately how many seconds did it take for the rock to hit the water?
3.9 sec
6.2 sec
7.2 sec
5.3 sec

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