Question

How do you solve:
Y=-3
Y=-2x+1
And put it on a graph, finding the solution?

Answer 1

7

Answer 2

-7

Answer 3

y = -3 >.<

plot a straight line on the y axis at (0,-3)

then plot the y intercept of y = -2x + 1 -- (0,1) and apply rise over run.

Where they intersect is your solution .-.

Answer 4

Since we alread knew that y = -3, plug that to second equation:

y = -2x + 1
-3 = -2x + 1
solve for x then that it.

Answer 5

http://prntscr.com/3aeewg

(2,-3) is your solution, when you plug in -3 for y into y = -3 you get \(\ -3 = -3 \color{green}{\checkmark} \)

and \(\ - 3 = -2(2) + 1 \longrightarrow -3 = -4 + 1 \longrightarrow -3 = -3 \color{green}{\checkmark} \)