Question

A line with a slope of -2 is written in the form y=mx+b.

what is the value of b If the line passes through the point (5,-7)?​

Answer 1

b = 3

Explanation:

The equation of a line in slope- intercept form is

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

Here m = - 2 , then

y = - 2x + b ← is the partial equation

To find b substitute (5, - 7 ) into the partial equation

- 7 = - 10 + b ⇒ b = - 7 + 10 = 3