The answer is B) or y = -4x + 160
If her initial weight is 160 pounds, then you must subtract 4x, representing how much weight she lost over time, to find her current weight y
But, since y = 160 – 4x isn't an option, we can reverse to negatives as long as you change the addition/subtraction sign
So, subtracting positive 4x is the same as adding -4x
Therefore, y = 160 – 4x is the same as y = -4x + 160
The answer is the first choice!!
We know that coordinates are labeled (x,y)
The formula to find slope is (Y2-Y1)/(X2-X1)
So (2- (-7))/(-6-(-6) undefined because the denominator is zero. The line looks like a vertical line at x=-6
<span> x2 - 2x + 2
hope this helps</span>
First of all, you have to find the area of both triangles:


Or just 16 because there are 2 of the same triangles.
Now you have to find the area of the 3 rectangles.
The two that are in the front are 4*3 (l*h) or 12*2 (because there are 2 congruent rectangles. The area of those rectangles is 24 square mm.
Now you find the area of the back rectangle:
5.7*3 = 17.1
Finally, you add all the found numbers to figure out the surface area.
17.1 + 16 + 24 = 57.1 square millimeters.
Hope this helped,
Loafly