Using y=mx+c, where y is the location of y-axis, m is the gradient, x is the location on the x-axis & c is the y-intercept.
We can substitute the values into the formula y=mx+c
*****NOTE THAT Y=MX+C IS THE SAME AS Y=MX+B ----------------- C = B !
y = Y, m = -3, c = -1
..
Y = -3x -1
gradient (m) = rise/run
Y = (-3/1) -(1)
.. Where -3 (numerator of m) is rise
.. Where 1 (denominator of m) is run
{ THERE IS ALWAYS A 1 BELOW ANY NUMBER WITHOUT DENIMINATOR! }
__________
GRAPH REPRESENTATION :::::::: PROVIDED