That's a true statement. In fact, it doesn't even matter what the two numbers are.
'A' times 'B' is equal to 'B' times 'A', whatever they are.
-2/5 = -0.4
1/2 = 0.5
0.5 - 0.4 = 0.1 or 1/10
Answer:
y= -x
Step-by-step explanation:
First, let's put the line in y=mx+b form
8x-4y=12
Subtract 8x over
-4y= -8x+12
Then divide everything by -4
y=2x-3
To find the perpendicular slope, negate the slope and flip the numerator and the denominator
Original Slope: 2/1
Flip: 1/2
Negate: -1/2
Then, use the point slop formula to find the equation of the line.
(y-)=m(x-)
Insert (0,0) in for and -1/2 in for m
y-0= -1/2(x-0)
Distribute the -1/2
y-0= -1/2x+0
Add the 0 over
y= -1/2x
Answer: -4/5
Step-by-step explanation: It's important to understand
that perpendicular lines have negative reciprocal slopes.
"Negative reciprocal" is just a fancy way
of saying flip the fraction and change the sign.
So if we flip the fraction 5/4 we get 4/5 and
if we change the sign we get -4/5.