A bird with roller blades.
Let's first turn 1 9/10 into an improper fraction, which is 19/10
so if R/12 equa;s 19/10, cross multiply
10r equals 228
divide both sides by 10, you get r= 22.8
X=-b/2a=4/14=2/7
Plug this value back into the function to find the corresponding Y value
What type of number can be written as a fraction a over b where a and b are integers and b is not equal to zero ?
The answer is integers.
Examples of integers: 5, -8, 6/9, 100, -4/2
Happy to help!