Question

A line y = mx +b passes through point (8, – 6) and is parallel to y = -x +4.

What is the value of b?

Answer 1

b = 2

Explanation:

Since the two lines are parallel, their slope is the same.

Slope = -1

The function: y = -x + b

Plug in the coordinate values to solve for b.

-6 = -8 + b

-6 + 8 = b

2 = b

b = 2