Question

What is the equation of the line that has a slope of -2 and passes through the point (-1, 2)?

Answer 1

`{ \bf{y = mx + c}} \\ 2 = ( - 2 * - 1) + c \\ c = 0 \\ \\ { \boxed{ \bf{y = - 2x}}}`

Answer 2

y = -2x

Explanation:

The equation of a line in slope intercept form

y = mx+b where m is the slope and b is the y intercept

y = -2x +b

Using the point

2 = -2(-1)+b

2 = 2+b

Add -2 to each side

2-2 =b

0=b

y = -2x+0

y = -2x