1) function 2) not a function
the first one is a function because its y values are the same number (3), which means it is a horizontal line and horizontal lines are functions.
the second one is not a function because the coordinates cannot have different inputs but different outputs. each input must have only one output.
the coordinates for the second one are:
(2,5); (1,1); (1,2); (3,2)
and <u>a function cannot have two same x-coordinates</u>. it must pass the vertical line test which is a way to tell if something is a function or not. since the second graph does not pass the vertical line test, it is not a function
hope this helps :)
The maximum number of watches Alif could buy is 3 watches. 55+55+55=165. The remaining money is 35!
Hey!
A perpendicular line has the slope as the negative reciprocal of the given line, so therefore the new lines slope would be...
y = 6/5x + b
Now to find the y-intercept you will have to just plug in the given point/coordinate in the equation above and solve for b...
11 = 6/5(0) = b
11 = b
Put the given slope and y-intercept in a slope intercept form equation (slope intercept form is y = mx + b)...
y = 6/5x + 11
This new equation is:
1) perpendicular to the given equation
2) in slope intercept form
Answer: y = 6/5x + 11
Hope this Helped!
~A