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Mathematics 8 Online
OpenStudy (anonymous):

Solve the following system. (picture) Do I just add the two together?

OpenStudy (anonymous):

jimthompson5910 (jim_thompson5910):

Since y = x^2 + 4, we can replace the 'y' in the second equation with x^2+4 to go from y - 4x = 1 to x^2+4 - 4x = 1 Now solve for x

OpenStudy (anonymous):

I got x=1 & x=3

jimthompson5910 (jim_thompson5910):

now use those x values to find the corresponding y values

jimthompson5910 (jim_thompson5910):

so when x = 1, y = ??? and when x = 3, y = ???

OpenStudy (anonymous):

To I put it into the first equation this time?

jimthompson5910 (jim_thompson5910):

either equation works

jimthompson5910 (jim_thompson5910):

since these solutions satisfy both equations

OpenStudy (anonymous):

Oh okay, and then I got (1,5) & (3,13)

jimthompson5910 (jim_thompson5910):

you nailed it

OpenStudy (anonymous):

Only with your help! Thanksss!!!!!

jimthompson5910 (jim_thompson5910):

I'm glad I could help

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