3.
ninths=1/9
1/3 is equal to 3/9.
so (1/9)*3 = 3/9
Plug into y-y1=m(x-x1)
y+4=4(x-4)
0.2 is the same as 2/10
18/(2/10)
As you may have learned in school, when you divide a fraction, you flip the fraction in the denominator, and change it to multiplication
18/(2/10) becomes 18 x (10/2)
multiply normally
18 x 10 = 180
divide to find answer
180/2 = 90
90 is your answer
hope this helps
Remember, when you meet this problem, flip the second fraction, and change the division sign into multiplication. (always second, never first (if first is a fraction)).
That the last one
A parallelogram is not always a rectangle