Question

A. y = 8 − 7x
B. y = 7x + 8
C. y = 7x − 8
D. y = 8x − 7

Answer 1

I'm getting

y=-7x+8

The 7 is negative for me..You should maybe try yourself too and see what you get I might have made a mistake

Explanation:

I'm guessing you live somewhere in the U.S. so I'll use the equation you use there

Equation:

`y = mx + b`

`m = (y1 - y2)/(x1 - x2)`

first pick two points

I'll pick (0,8) and (1,1)

`m = (8 - 1)/(0 - 1) = (7)/( - 1 ) = - 7`

this means that the slope is -7

So far the equation will look like this

`y = - 7x + b`

to get b pick one point, I'll pick (0,8) and replace y and x

`8 = - 7 * 0 + b`

when you solve this you'll get b

`b = 8`

So the equation will look this

`y = - 7x + 8`