Question

The equation of a line is x + 5y = 12. What is the y-intercept of the line? a. 12 b. 512 c. 125 d. −12

Answer 1

c

Explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

given

x + 5y = 12 ( subtract x from both sides )

5y = - x + 12 ( divide through by 5 )

y = -
`(1)/(5)` x +
`(12)/(5)` ← in slope- intercept form

with y- intercept c =
`(12)/(5)`