Vertical Question 27 :
If the coordinates of the two points are P (-7,5) and Q (-6, 9), then (abscissa of P) - (abscissa of Q) is
O-3
O 1
O-2​

When rates are expressed as a quantity of 1, such as 2 feet per second or 5 miles per hour, they are called unit rates. if you have a multiple-unit rate such as 120 students for every 3 buses, and want to find the single-unit rate, write a ratio equal to the multiple-unit rate with 1 as the second term.