​ plz help asap

OK, RP....you have already done this without realizing it...

Slope of given line = -4        point ( 1, -2)

y = slope ( x - x coordinate) + y coordinate

y = -4 ( x - 1) + (-2)

y = -4x + 4 - 2

y = -4x + 2

Let's write the equation we are looking for as

y= mx + b       the slope of the original equation is  -4

y=-4x + b        Substitute in the point 1,-2 to calc 'b'

-2 = -4(1) + b

2=b

so     y = -4x + 2