S1 Math Algebra

• In 3x + y, 3 is the coefficent of x
• In 8+a+9z, There are 3 terms in total
• In 5a-7+xy, There are 3 variables altogether
• 9 x z=9z
• In 5+a+xy+2z, 5 is the constant
• x2 is non linear [linear/non linear]
• 4y is linear [linear/non linear]
• Linear equations have all of its numbers' powers' at 1
• having double variables such as xy or ab is considered non linear
• If f=7, then 3f=21 [Final answer]