Question

Help, will medal and fan!
If a line with a slope of -2 crosses the y-axis at (0, 3), what is the equation of the line?

Answer 1

@Loser66 will you help ?

Answer 2

I think if you give me some idea, I can help. ;)
What is the equation of a line?

Answer 3

it gives me
y − 2x = 3

-2y + 3x = 1

y + 3x = 2

y + 2x = 3
them are the answers

Answer 4

the slope form of a line is y = mx +b, where m is slope. In your case, they give you m = -2, hence, it is y = -2x +b
now, you need find b
the line passes through (0,3), that is if x =0, y =3, the point is on the line. So, you just plug the point in y = -2x+b to find b, it is 3= -2(0) +b --> b =3
now plug back, y = -2x +3 is the required line
I don't know how can you get the answer. Although it is correct but when jumping into the answer without any argument, I don't think your Prof will give you the whole credit. :)

Answer 5

Thanks ! but which one is the answer then? hahha