Select all the systems of equations that have exactly one solution. y = 3x + 1, y = -3x + 7
y = 3x + 1, y = x + 1
y = 3x + 1, y = 3x + 7
x + y = 10, 2x + 2y = 20
x+ y = 10, x + y = 12

Step-by-step explanation:

y=3x+1, y= -3x+7

y=1,X=1

X+y=10,2x+2y=20

X=5, y=5

step-by-step explanation:

when the line is solid:

when the line is dashed:

this > inequality sign means:

this < inequality sign means:

this > inequality sign means:

this < inequality sign means:

about the problem:

srry i'm not done ! i'll