We often describe winter coats as warm. Or, we say that a thick sweater "keeps out the cold." Are these descriptions correct? Why or why not? (Remember that heat is the movement of energy. So, heat moves, not cold.)

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

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the formula of a slope:

we have the points (-2, 7) and (2, 3). substitute:

answer: the slope is equal -1.