Answer:
y = 7 is the same as y = 0x + 7 in slope intercept form
slope m= 0 parallel to x-axis
A line to the x-axis (or to a line parallel to x-axis) will be parallel to the y-axis (perpendicular to x-axis)
Equation of y-axis is x=0
this line passes through (2,9) means the line parallel to y-axis has x-coordinate =2
so, equation of this line is x=2
Step-by-step explanation:
