What form would you use to write the equation of a line if you knew the slope and x-intercept? Explain.

1 answer:

8 0

You know the slope and the point (x1,0) where x1 is the x coordinate of the x intercept.

You use the point slope form of the line:-

y - y1 = m(x - x1) where m = slope and (x1,y1) is a point on the line.

here y1 = 0 so the equation would be

y = m(x - x1)

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A Ferrari drove 300 kilometers in one and a half hours. How fast was the car going?

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I'm assuming you mean how many mph when you refer to how fast the car was going.

So 300 km = 1.5 hrs

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Since we have the equation 300km = 1.5hr, we can just divide 1.5 (to isolate the number of hours) on both sides.

You should get 200 km = 1 hour

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You should get 124.274238.

That means the Ferrari drove at a pace of roughly 124 mph :)

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