How do I do slope-intercept form of a linear equation? I really don’t get it

Select the lengths in centimeters that would form a right triangle

Abag contains 3 red marbles, 2 blue marbles, and 2 green marbles. one marble is picked, then another marble. assume that the selections are made with replacement. a) find the probability of picking two red marbles with replacement. b) find the probability of picking a red marble and a blue marble. assume the selections are made without replacement. c) find the probability of picking two red marbles without replacement. d) find the probability of picking a red marble and a blue marble without replacement.

Plot a point at the y-intercept of the following function on the provided graph. 3y=-5x+7 20 points