Question

what is the slope and y intercept of this equation?
x+2=0

Answer 1

Most useful form of straight-line equations is the "slope-intercept" form:

y = m x + b

This is called the slope-intercept form because "m" is the slope and "b" gives the y - intercept

y - intercept = value of y when x = 0

In this case :

y = x + 2

slope = 1

y - intercept = 0 + 2 = 2


y = x + 2 = 0

x = - 2

This point is called x - intercept

value of x when y = 0

Answer 2

eh? The equation was x+2=0

It is a vertical line at x = -2, and has no y-intercept!