The relation 32 38 18 22 is a function True or False A

The relation { (3,2) , (3,8) , (1,8) , (2,2) } is a function. True or False

A horizontal line through the point has equation y= 3. True or False

Solution

The relation { (3,2) , (3,8) , (1,8) , (2,2) } is a function.

This is false because a function can not contain two ordered pairs with the same coordinate here ordered pair (3,2),(3,8) has same first coordinate 3.

A horizontal line through the point has equation y= 3

This is True.Because any line parallel to x-axis (horizontal line) is y=a , where a is a constant.