so basically you know your slope is 0, which is represented by m. that’s done. so you know it’s gonna be a straight, horizontal line. now you find the y-intercept. i do something called “collect the evidence”. you have a set of given points, (2,-7). so what i do is fill in the blanks, i’ll do it for you in this scenario:
y= -7
m= 0
x= 2
b= ? (you’re finding b, it’s still unknown)
make sure when you do this, it’s always in y=mx+b format
anyways now you set it up like this
-7= 0(2) + b
now i am going to let you solve that. after you get x = b, whatever x is is your y-intercept. so then you graph a horizontal line crossing the y-intercept at the given point (0, x) which you will find out by solving.