Ab and bc form a right angle at point b. if a= (-3,-1) and b= (4,4) what is the equation of bc

Lems1. the following data set represents the scores on intelligence quotient(iq) examinations of 40 sixth-grade students at a particular school: 114, 122, 103, 118, 99, 105, 134, 125, 117, 106, 109, 104, 111, 127,133, 111, 117, 103, 120, 98, 100, 130, 141, 119, 128, 106, 109, 115,113, 121, 100, 130, 125, 117, 119, 113, 104, 108, 110, 102(a) present this data set in a frequency histogram.(b) which class interval contains the greatest number of data values? (c) is there a roughly equal number of data in each class interval? (d) does the histogram appear to be approximately symmetric? if so, about which interval is it approximately symmetric?

Jenisey has $24 to spend on seven pencils. after buying them she had $10. how much did each pencil cost.?

What are the coordinates of the midpoint of ab? ,1/2) /2,-1) ,-3/2) /2,-2)