Question 54855
14.	Find the slope and the y-intercept.
	y = 7x – 7
This line is in slope intercept form: {{{highlight(y=mx+b)}}}, where m=slope and (o,b) is your y-intercept.
{{{y=highlight(7)x-7}}} Your slope is 7.
{{{y=7x+highlight(-7)}}} Your y-intercept is (0,-7)
:
15.	Find the slope and y-intercept.
	x = 1
A)	Slope: 0; y-intercept: (0, 1)
B)	Slope: undefined; y-intercept: (0, 1)
C)	Slope: 0; y-intercept: none
D)	Slope: undefined; y-intercept: none
Notice that the equation only has an x and no y. x=1 is a special case, it is a vertical line {|}in which x is always 1.  Vertical lines have slopes that are undefined and don't cross the y-axis (they can be the y-axis, but they can't cross the y-axis).  Therefore the answer is {{{highlight(D)}}}
Happy Calculating!!!