An object moves at a constant rate. the graph shows the object's height at different times. which equation represents the situation?
a. y = −15x 900
b. y = −15x − 900
c. y = 15x − 900
d. y = 15x 900

d. y = 15x 900

Although you do not give the rates I assume the answer is D as it is the only positive multiplication. You cannot have negative height.

Answerthe simplified expression isexplanationthe given expression is,let us deal with the bracket first.the two negatives in the parenthesis will become positive.the expression now becomes,we now expand the parenthesis to get,we group like terms to obtain,this simplifies to,