Question 401264
y= 2x - 4
y=-3x + 1
:
The first equation y = 2x - 4, therefore you can substitute y with 2x-4 for y in the 2nd equation
2x - 4 = -3x + 1
Add 3x to both sides
2x + 3x - 4 = 1
Add 4 to both sides
2x + 3x = 1 + 4
5x = 5
x = {{{5/5}}}
x = 1
:
:
Use 1st equation to find y: replace x with 1
y = 2(1) - 4
y = 2 - 4
y = -2
:
:
Check solutions by replacing x and y in the 2nd equation
-2 = -3(1) + 1
-2 = -3 + 1; confirms our solutions of x=1; y=-2