Can someone help me with this question? I can’t seem to remember all the customary units and I don’t want to cheat by looking it up. Thanks.

Is each relation a function? if so, state whether it is one-to-one or many-to-one. 3. (-4,7), (-3,5), (1,4), (3,-8), (5,-11) 4. (-4,8), (-2,4), (0,1), (2,4), (4,8) 5. (-2, 1), (-2,3), (0,-3), (1,4), (3,1)

What is the missing step in this proof ?

What is the value of x in the equation 1.5x+4-3=4.5(x-2)?