20 pionts

The graph shows three lines y1 = x + 3, y2 = 2x + 3, and y3 = 4x + 3. What does increasing the value of the coefficient in front of x do to the line?
Responses
A It makes the line become shallower.It makes the line become shallower.
B It makes the line change from increasing to decreasing.It makes the line change from increasing to decreasing.
C It makes the line become steeper.It makes the line become steeper.
D It moves the line down on the coordinate plane.It moves the line down on the coordinate plane.
E It moves the line up on the coordinate plane.