Determine if the given equations are functions or not functions. x=3
Functions
x2 + y2 = 81
Not Functions
y=-x+11
y? = -5x - 12
y = 2x2 - 6x + 4
y = -7

Find 2 numbers multiply those 2 numbers the answer will be -30 but if add them together will get 7so 10 and -3 are the two numbers10(-3) = -3010+(-3) = 7(x-3)(x+10) hope this !

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.

Could you make it more clear?