Question

Solve the system by the substitution method.

x2 + y2 = 113
x + y = 15
A. {( -8, 7), ( -7, 8)}

B. {( 8, -7), ( 7, -8)}

C. {( 8, 7), ( 7, 8)}

D. {( -8, -7), ( -7, -8)}

Answer 1

@JoannaBlackwelder time for ya next medal lol

Answer 2

Haha! Any thoughts on how to start?

Answer 3

yeah start subbing for the first equation to see wich one imakes it a true statement

Answer 4

Hm, no, that's not what is meant by substitution.

Answer 5

ohhh

Answer 6

First solve for a variable.

Answer 7

ok this is harder then i thought haha

Answer 8

Then sub it into the other equation.