(1/2) / (3/4) = 1/x....1/2 bedroom to 3/4 hr = 1 bedroom to x hrs

cross multiply

1/2x = 3/4

x = 3/4 * 2

x = 6/4 of an hr

7. i would guess 95-100 people were surveyed. the way you estimate this is by adding the number of students in each category. ex. about 3 in the first bar, about 9 in the next

8. no, you could not list the exact height because the data given only shows the number of students in between 75-80, not their actual height.

**Answer:**

-2

**Step-by-step explanation:**

given 2 points on a line (x1, yx) and (x2,y2)

the formula for slope, m = (y2-y1) / (x2-x1)

in this case,

x1 = 4, y1 = 3, x2 = 2, y2 = 7

Hence,

m = (7-3) / (2-4) = 4 / -2 = -2

He is correct because there is a rule that all squares can be rhombus's but not all rhombus's can be squares.