Question

find equation of the line passing through the points (1, -2) and (-2,4)

Answer 1

start with the slope.

Answer 2

ok the slope is my answer?

Answer 3

Nope.

Answer 4

then u have to substitue that into a formula to get the answer.

Answer 5

m=y-y1/x-x2?

Answer 6

is that the formula?

Answer 7

\[slope = \frac {y_2-y_1}{x_2-x_1}\]

Answer 8

y=-2x is the solution

Answer 9

after finding the slope,

\[({x_2-x_1})m = {y_2-y_1}\]
use this.

Answer 10

ok thanks

Answer 11

Better to use y=mx+b to find the y-intercept ie b
after the slope formula is used.

Answer 12

i use the same method..
but most people aren't taught that method in schools.

so to make them less confuse i use that same method.