Question

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

Answer 1

Answer:

The answer is

$y = 2x$

Step-by-step explanation:

To find an equation of a line given the slope and a point we use the formula

$y - y_1 = m(x - x_1)$

where

m is the slope

( x1 , y1) is the point

From the question the point is (-1 , 2) and the slope is - 2

The equation of the line is

$y - 2 = - 2(x + 1) \\ y - 2 = - 2x - 2 \\ y = - 2x - 2 + 2$

We have the final answer as

$y = 2x$

Hope this helps you