Common ratio = 6/3 = 2
10th term
= 3(2)^(10-1)
= 3 x 2^9
= 3 x 512
= 1536
We start with:
y=2x-15
y=5x
Now, we have a perfectly set-up variable we can get rid of: <em>y.</em>
But we need to make either the top or bottom equation negative, so for simplicity, let's make the bottom one negative.
y=2x-15
(-y)=(-5x)
Now simplify.
-3x-15=0
Add 3x on both sides.
3x=15
Divide by 3 on both sides.
x=5
The bottom left, lies never -6 on x axis and 20 on y axis