Question

Consider the function represented by 9x+3y = 12 with x as the independent variable. How can this function be

written using function notation?
ORD=-v+
O f(x) = -3x+4
OF) = -3y+ 4

Answer 1

• f(x) = -3x + 4

Explanation:

Given function:

• 9x + 3y = 12

Putting this into slope-intercept form: y = mx + b

• 9x + 3y = 12
• 3y = -9x + 12
• y = -3x + 4

Replacing y with f(x)

• f(x) = -3x + 4