Can somebody help pls! I need y for MN and x RT

Find an equation of the line perpendicular to the graph.

Aline has a slope of 1/4 and passes through point (0.4,-1/2). what is the value of the y-intercept?

1. if we have 3 babies what is the probability they’re going to be all boys? 2. if we roll 2 die at the same time what is the probability of getting less than 10 on the first roll and a 5 on the second roll 3. if we have 3 babies what is the probability their is going to be 2 girls? 4. if we have 3 babies what is the probability of having no more than 1 girl? 5. it we have 3 babies and then have another 3 babies what is the probability of us having at least 1 boy and then having all girls?