Question

Write down the equation of the line with gradient -4 passing through (0,5)

Answer 1

Answer: y = -4x + 5

Explanation:

First, the y-intercept b is 5 (line passes through 0,5) second, the slope m is -4 (definition of gradient). So,

y = mx + b (equation of a line where slope = m and y-intercept = b

substitute in what you know

y = -4x + 5