What is the equation of line through (0,4) with slope -1?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e. y = - x + 4.
Equation of a line in slope-intercept form: y = mx + c, where m = slope and c = y-intercept
Given point = (0, 4) and slope m = -1, the y-intercept c = 4 (Since the line crosses the y-axis when x = 0)
So, y = -1 × x + 4
⇒ y = - x + 4