Question

Solve the system of linear equations below.

y = -2x + 19
y = x + 7

Answer 1

substitute the 2nd equation into the first:

x + 7 = -2x + 19

Answer 2

to solve for x

Answer 3

ok

Answer 4

ok :) lemme know what you get

Answer 5

yeah gimme a sec

Answer 6

wait do I minus 7?

Answer 7

what did you do first?

Answer 8

-7 off 19

Answer 9

Yeah, you can do that :)

Answer 10

x=4?

Answer 11

yup, good on you! now you just substitute 4 into the first equat

Answer 12

*equation to solve for y:

y = -2(4) + 19

Answer 13

11?

Answer 14

thanks

Answer 15

yep :) no problem. Well done!