Using the substitution method, Vito is solving the following system of equations algebraically: y + 3x = -4
2x – 3y = -21
Which equivalent equation could Vito use?
1.
2-3x – 4) + 3x = -21
2.
2(3x – 4) + 3x = -21
3.
2x - 3(-3x – 4) = -21
4
2x - 3(3x - 4) = -21
Submit Answer
Hide Toolbar

Graph the line that represents a proportional relationship between d and t with the property that an increase of 33 units in t corresponds to an increase of 44 units in d. what is the unit rate of change of dd with respect to t? (that is, a change of 11 unit in t will correspond to a change of how many units in d? )