If f(x) = 5 x + 8, find the instantaneous rate of change of f( x ) at x=-7 ?
1 Answer
Jan 20, 2018
Explanation:
#"the instantaneous rate of cchange is the value of f'(x)"#
#"at x =- 7"#
#rArrf'(x)=5#
#"this is in fact the slope of the linear equation"#
#"instantaneous rate of change for x = - 7 is "=5#
