Question

14. Which of these functions is linear?

A. xy = 12
B. y = x5 - X4
C. 3x + 5y = 9
D. y - 2 = x(x + 1)

Answer 1

Linear means degree is 1

#A

• xy=12

Not linear

#B

• y=x⁵-x⁴

Degree is 5 not linear

#C

• 3x+5y=9

Linear

#D

• y-2=x²+x

Degree is 2 hence quadratic

Answer 2

3x + 5y = 9

Step-by-step explanation:

A linear function is represented by the equation: y = mx + b

In option C:

3x + 5y = 9 is a linear equation as it has slope and y-intercept