I need help with the first I need instructions on how to do it

Using the given points, you would substitue them into the slope formula.

y2 - y1/x2 - x1

a. (7-(-15)) / (-1-1)

   (7 + 15) / -2

   22/-2

   -11

To find the y intercept use y = mx + b

7 = -11(-1) + b

b = 11 - 7

b = 4

Thus, the equation of the line would be y = -11x - 4

step-by-step explanation:

i have done this all on a piece of paper but idk how to put it on here cuz it needs to be drawn

i think the answer is seven, for if i'm being useless °ω°

step-by-step explanation: