AnUnknownDrummer
05-6-2012, 09:08 PM
Somewhere in my math I keep butchering this problem, I know it's really easy but my numbers aren't matching up.
1. y = 8 - x
2. y = sqrt(36 - x^2)
I need to graph by hand (which I did using a T-chart) and then solve for intersections algebraically.
I figured I could use the substitution method with #1:
y = 8 - x
y + x = 8
x = 8 + y
and substitute that value into #2:
y = sqrt(36 - [8 + y]^2)
after this my numbers don't add up. My math could be wrong before or after this point and I have no idea... Help?
1. y = 8 - x
2. y = sqrt(36 - x^2)
I need to graph by hand (which I did using a T-chart) and then solve for intersections algebraically.
I figured I could use the substitution method with #1:
y = 8 - x
y + x = 8
x = 8 + y
and substitute that value into #2:
y = sqrt(36 - [8 + y]^2)
after this my numbers don't add up. My math could be wrong before or after this point and I have no idea... Help?