Solve the system by substitution.
y = 2x + 35
y = 9x

(5,45)

Step-by-step explanation:

Hi,

y = 2x + 35

y = 9x

To solve, we can substitute 9x for y.

9x = 2x + 35

Subtract 2x...

7x = 35

Divide by 7...

x = 5

Now plug in 5 for x...

y = 9x

y = 9(5)

y = 45

Your answer is (5,45)

I hope this helps :)

x=5, y=45. (5, 45).

Step-by-step explanation:

y=2x+35

y=9x

2x+35=9x

35=9x-2x

35=7x

x=35/7

x=5

y=9(5)=45

the equation for this situation is y=122+45. to solve the equation you would add 45 and 122 to get a total of 167lbs. in conclusion, grace's weight eight weeks ago was 167lbs.