Sur it's a function because for each x value corresponds one and only one y value.
Another easy way to determine if y is a function is to apply the vertical test:
If you draw a vertical line and this lines intersects the graph in one point, then y is a function
Find all real numbers x such as 4x-9-1 -x+5>4
4x-x-5>4
add 5 on both sides...
3x>9
divide by 3 on both sides...
ANSWER: x>3
Result: 1 2/3 : 4 3/8 = 821 ≅ 0.3809524 ... subtraction fractions: 2/3 - 1/2 • multiplying a fraction by another fraction - multiplication: 7/8 * 3/9 ... multiplying a fraction by a whole number: 6 * 3/4
She finished 5/6 of her work and still has 1/6 do to.
Turner Middle School
620 students
31 teachers
Green Middle School
950 students
38 teachers
If you want the ratios of teachers to teachers and students to students for Turner to Green...
the ratio of students to students is 620/950 = 0.65
the ratio of teachers to teachers is 31/38 = 0.82
