Do you think all substances can change into a solid, liquid or gas?

In short yes in long

Explanation:yes all substances can exist in any of these three states. In addition to existing in one of the three states, matter can also undergo a change of state. A change of state occurs when matter is converted from one state to another state for example when a liquid is converted to a gas or a solid is converted to a liquid.

answer: a) y=-8x+5

a) m= -8

b) m= -2

c) m= 7

d) m= 6