Question

What is the slope of the line described by the equation below?

Answer 1

Answer: -2

Step-by-step explanation:

The equation of a line in slope - intercept form is given as :

$y = mx + c$

where m is the slope and c is the y - intercept.

Equation given :

$y - 9 = -2(x-8)$

⇒ $y - 9 = -2x + 16$

add 9 to both sides , we have

$y = -2x + 16 + 9$

$y = -2x + 25$

comparing with :

$y = mx + c$

slope = -2