Hey there! I'm happy to help!
All of these answer options are in slope intercept form (y=mx+b) where m is the slope and b is the y-intercept.
If our slope is 3, our m will be 3 in the equation, which matches our answer options.
We now want to find the y-intercept (b). To do this, we plug in the point (1,-2) into the equation with our slope of 3 and then solve for b.
-2=3(1)+b
We flip the equation so b is on the left.
3(1)+b=-2
3+b=-2
We subtract 3 from both sides.
b=-5
So, the equation of this line is y=3x-5.
Have a wonderful day! :D
