Javier asks his mother how old a tree in their yard is. His mother says, "The sum of 10 and two-thirds of that tree's age, in ye
ars, is equal to 50." Javier writes the equation (10 + two-thirds) a = 50, where a is the tree's age in years. His equation is not correct. What error did he make?
The function has a slope : m = - 2 and contains the point ( 8, 12 ). y = m x + b 12 = ( - 2 ) * 8 + b 12 = - 16 + b b = 12 + 16 b = 28 The slope-intercept form of the function is: y = - 2 x + 28