Question

Help with number 15 please

Answer 1

Answer: B

Step-by-step explanation:

You have two points, use the tilt formula (y2-y1)/(x2-x1)=m. The resultad is -3. And use the straight line formula y-y1=m(x-x1).

In this case, use the first point (1,2)

y-2=-3(x-1)

y-2=-3x+3

y=-3x+5

Answer 2

It's B

Explanation:

y=mx+b