How would you define the y-intercept? My reply is the y-intercept is when a line crosses over the y axis without crossing the x axis, x=0

Is my answer right
Please help
15 points

Find the sum of the measure of the interior angles of a polygon of 9 sides ; of 32 sides

1) in triangle the, what is the measure of angle t (in degrees)? 2) in triangle bat, the measure of angle b is 66∘, and the measure of angle t is 77∘.what is the measure of the exterior angle at a (in degrees)?

Over the course of the school year, you keep track of how much snow falls on a given day and whether it was a snow day. your data indicates that of twenty-one days with less than three inches of snow, five were snow days, while of the eight days with more than three inches of snow, six were snow days. if all you know about a day is that it is snowing, what is the probability that it will be a snow day?