Question

Which of the following is a linear equation in one variable?

a. X + Y = 4
b. X2 + 5 = 9
C. X = 4 + y
d. 4-X = 5​

Answer 1

the correct answer is option D

Step-by-step explanation:

-x=5-4

-x=1

therefore x=-1

Answer 2

A. X + Y = 4

step explanation: