Question

A line has a slope of 4 and passes through the point (1, -1).

Answer 1

Whats the question :/

Answer 2

That's all it gave me so I think I have to create a equation.

Answer 3

y = mx + b. M = slope.

Answer 4

I know that but it has to pass through (1,-1,).

Answer 5

www.desmos.com/calculator

Answer 6

Thats a way you can check to look to see if it makes a line.

Answer 7

ok since there is the point, which one is the x? (that will represent x in y = mx + b)

Answer 8

1

Answer 9

The slope is 4x

Answer 10

y = 4(1) + b

Answer 11

NEVER MIND IM AN IDIOT

Answer 12

y - y1 = m(x - x1). replace this, do not solve.

Answer 13

-1-1(-1)=4(4x-4(4) << is that how I will put it in.

Answer 14

No, you do not have y or x. You have y1 and x1. You will keep y and x the same, replace the rest :D

Answer 15

O ok.

Answer 16

I will just give you step by step instruction.
y - y1 first. y1 is -1 so y + 1 (the double negative cancles and becomes a positive.
So you have y + 1 = m(x-x1)
m = 4 as you already found out so y + 1 = 4(x - x1).
Now x1 = 1 so your answer is:
y + 1 = 4(x - 1)

Answer 17

I get it now thx I will medal you and fan if you like.

Answer 18

Sure, thank you. I just learned this too so I like practicing and teaching at the same time :D