Question

Solve the system of equation by graphing:
y=-2x-10
y=5x+11
Answer: (x,y)=

Answer 1

Would you like to solve this by using substitution?

Answer 2

Solve for one variable (let's say y), then plug in on the other y variable for the other equation...

Answer 3

Yes

Answer 4

Answer? ?

Answer 5

Does it make sense on the instruction i gave?

Answer 6

To do this by graphing, you'd graph each equation on the same xy axis. You can use pencil/paper or technology like desmos

http://www.desmos.com/calculator

Answer 7

the point where the two lines cross is the solution as an ordered pair

Answer 8

https://www.desmos.com/calculator/ywskcjptsg

Answer 9

y=10

Answer 10

Then substitute y=10 into the equation to find x