A Four students tried to write 12x + 3y = 9 in equivalent y=mx+ b form. Did each student get an equation equivalent to the original Ax + By = C
form? If so, explain the reasoning for each step. If not, tell what errors the
student made.
Jared
12x + 3y = 9
3y = -12x + 9
y = -4x+3
(1)
(2)
Molly
12x + 3y = 9
3y = 9 - 12x
y = 3 - 12x
y = -12x + 3
(1)
(2)
(3)
Mia
Ali
12x + 3y = 9
4x+y = 3
y = 3 - 4x
y = -4x+ 3
(1)
(2)
12x + 3y = 9
3y = 9-12x
y = 3 - 4x
y = 4x - 3
(1)
(3)