First you need to rewrite the equation in the form y = mx +b:
2y = x-4
Divide all terms by 2:
2y / 2 = x/2 - 4/2
Simplify:
y = 1/2x - 2
The slope of the line is 1/2.
A perpendicular line has a slope of the negative reciprocal, which would be -2.
Now using the point slope method:
y - y1 = m(x-x1)
Using the given point of (8,-4) and m = -2
you get:
y +4 = -2(x-8)
Simplify:
y +4 = -2x +16
Now subtract 4 from both sides to get the final equation:
y = -2x +12
Answer:
1289.8089172
Step-by-step explanation:
if you do 90 x 2 = 180 you get the circumference of what would be the complete circle, the formula for area with circumference is A = (C^2/4x3.14) so inserting 180, the answer is 2579.61783439, and half of that is a semi circle so 2579.61783439/2 = 1289.8089172
Answer:
Doubling the actual answer and increasing it by 2.
Step-by-step explanation:
The calculator is returning 26, instead of 12. Note that 26 is 2 more than twice of 12.
i.e.
26 = 2(12) + 2
Calculator is returning 32 instead of 15. Here again we can note the same logic. 32 is 2 more than twice of 15.
i.e.
32 = 2(15) + 2
Calculator returns 202 instead of 100. Here again the same logic holds true.
i.e.
202 = 2(100) + 2
So, what the calculator is doing is:
Doubling the actual result and increasing it by 2.
Answer:
4x{16+y}=?
Step-by-step explanation:
Answer:
-3/2
Step-by-step explanation:
the slope of a line is expressed as ratio y/x showing how many units y changes, when x changes a certain number of units.
so, going from A to B, x changes 4 units (from -3 to +1), and y changes 6 units (down, from +3 to -3). that makes the y change negative.
so, the slope is
-6/4 = -3/2
