4.
If the relationship between the manipulated variable and the responding variable is a direct proportion, what will a line graph of this relationship look like? (1 point)

a straight line
a curved line
a jagged line
none of the above

5.
Which of the following is NOT a pure substance? (1 point)

milk
oxygen
water
carbon dioxide

6.
Water is a compound because it (1 point)

can be broken down into simpler substances.
always has two hydrogen atoms for each oxygen atom.
is made of water atoms joined together.
both a

Question

4.  
If the relationship between the manipulated variable and the responding variable is a direct proportion, what will a line graph of this relationship look like?  (1 point)

    a straight line
    a curved line
    a jagged line
    none of the above

5.  
Which of the following is NOT a pure substance?  (1 point)

    milk
    oxygen
    water
    carbon dioxide

6.  
Water is a compound because it  (1 point)

    can be broken down into simpler substances.
    always has two hydrogen atoms for each oxygen atom.
    is made of water atoms joined together.
    both a