A. Blue: y = -3x + 8
Black: y = 3x + 2
B. You find the ordered pair (x, y) that is a solution for both functions ( find the point where the two lines cross)
C. There’s two ways you can solve algebraically (using the equations); substitution and elimination. I don’t know which you need to use to answer but feel free to use my notes on how to do substitution for help. I don’t really have any on elimination ( it’s so easy you don’t even really need notes) or I would use them to explain.
f(x) = 5000(1.09^x) This would be the equation for the exponential growth function.
Find two points by giving x an y values and solving the equation:
y = -4/7x +1
1 = -4/7x +1, x =0
First point is (0,1)
5 = -4/7x +1, x = -7
Second point is (-7,5)
Now plot those two points on the graph and draw a line through them
See attached picture:
The correct option is (A) DEF
Explanation:
For similarity, one triangle has to be at least the scaled version of another. In the triangles given above as you can see:
The length of DE ( in DEF) = 5.5
The length of AB (in ABC) = 11 which is 2*(The length of DE ( in DEF))
Likewise
The length of EF( in DEF) = 2.5
The length of BC(in ABC) = 5 which is 2*(The length of EF ( in DEF))
Same goes for the third side.
Hence the correct option is (A) DEF