Answer:
the 4th one
Step-by-step explanation:
Perpendicular has slope that multiplies to -1
the slope for ax+by=c is -a/b
-1x+2y=4
slope=-(-1)/2=1/2
1/2 times what=-1?
-2
y=mx+b
m=slope
we need slope is -2
y=-2x+b
find b
given
(-2,1)
(x,y)
x=-2 and y=1 is a solution
1=-2(-2)+b
1=4+b
mius 4 both sides
-3=b
y=-2x-3 is equation
first one
Answer:
The characteristics of a directly proportional relationship graph: Linear Function. Passes through the origin(root at [independent variable] = 0]) Slope equal to ratio between y and x (y:x or y/x)
Step-by-step explanation:
