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Writing linear equations word problems

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Rachel is a stunt driver. One time, during a gig where she escaped from a building about to explode(!), she drove to get to the safe zone at 24 meters per second. After 4 seconds of driving, she was 70 meters away from the safe zone.
Let y represent the distance (in meters) from the safe zone after x seconds.
Complete the equation for the relationship between the distance and number of seconds.