Question

y = 2x - 3
x + y = 3

What is the solution set?


{(2, 1)}
{(1, 2)}
{(-1, -2)}
{(-2, -1)}

Answer 1

x + y = 3
we know that y = 2x - 3....so sub 2x - 3 in for y in the equation above and solve for x. Once x is found, sub that back into either of the equations and solve for y.

Answer 2

Let me get you started...
x + y = 3
x + 2x - 3 = 3
now solve for x

Answer 3

x going to be 1 right

Answer 4

wrong...try again

Answer 5

x + 2x - 3 = 3
3x = 6
x = ?

Answer 6

2

Answer 7

right...x = 2
now sub 2 in for x in the equation to find y
x + y = 3
2 + y = 3
y = 3 - 2
y = ?

Answer 8

1