The slope intercept formula y= mx+b .
y= mx+b
We already know the slope which is -3 and plugin 4 for x and 3 for y. Here we are trying to find the y-intercept which is b.
3= -3(4)+b
3= -12+b
+12 +12
15 = b
Here is how it is written in slope- intercept form:
y= -3x+15
