Sketch a graph of a vertical line. Use the definition of slope (m=\frac{y_2-y1}{x_2-x_1}) to explain how the slope of the line is classified. Sketch a graph of a horizontal line. Use the definition of slope (m=\frac{y_2-y1}{x_2-x_1}) to explain how the slope of the line is classified.

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step-by-step explanation:

answer: c.  

step-by-step explanation:

mixtures containing substances that get attracted to magnet can be separated using a magnet. we can separate iron from a mixture of sand and iron, as only iron attracts to the magnet.

the area of the rectangle is 35units^2.

step-by-step explanation:

graph it and find the distance.

it is a 5*7 rectangle.

therefore the area is 35units^2.

#12 the answer is the third option