The triangle with those side lengths is a scalene triangle. The sides of a scalene triangle are all different lengths.
So one dot you could make is at -1 on the y axis because your y intercept (the -1 in y=3/4x-1). Another dot you could make if you follow the slope is a point up three and over 4 (slope is rise over run).
Picture explanation:
Hope this helps!
There are (15 + 13) = 28 students in Ms.Peterson's class.
13 of them are boys.
The probability of drawing a boy's name is
(boys) / (total) =
<em> </em> 13 / 28 = <em> 0.4643...</em> = 46.4% . (rounded)