Question

What is the equation for the line that passes through (1,2) and (0,-1)?A) y=x-3B) y=-x+3C) y=-3x+1D) y=3x-1

Answer 1

First, we use the slope formula.

`m=(y_2-y_1)/(x_2-x_1)`

Let's replace the given points

`m=(-1-2)/(0-1)=(-3)/(-1)=3`

Remember that the slope is the coefficient of x.

Hence, the answer is D because it's the only equation with a slope of 3.