What is the solution to this math y = -2x+3

Y as function of x
y=f(x)
that just means y=-2x+3

that is form y=mx+b
m=slope
b=y intercept

so then
y=-2x+3
the y intercept is 3 so go up 3 units on the y axis from the center (0,0) and put a point there
the slope is -2
so slope is rise/run
rise/run=-2=-2/1
so go down 1 units and go right 1 unit
put another point there
we get the opints (0,3) and (1,1)
connect them
see graph below