Answer:
y=-2x
Step-by-step explanation:
we know linear functions can be in slope-intercept form: y=mx+b.
we are given the point (1,-2) so x=1 y=-2 and m=-2 because the slope is -2
so lets plug that into the slope-intercept form
y=mx+b
-2=-2(1)+b multiply
-2=-2+b add two on both sides
0=b
so it has the form y=-2x+0 aka y=-2x
