Functions and Slopes

Question 1

Vertical Line Test

Answer 1

Can only have one Y input. If there are multiple Y inputs, it is not a function.

Question 2

f(x) = 3x+1 (functions)

Answer 2

the f(x) is the same as saying y. the algebriac solution will be y = __. y = domain. x = range.

Question 3

Solving ratios

Answer 3

1. Numerator is the partial number (3:5, would be the 3 or the 5)
2. Denominator is the ratios added together (3+5)
3. Divide. Then multiply by the problem number (“how many students out of [48] are girls?)
   Example - 3/8x48 = 18

Question 4

Equivalent expressions

Answer 4

1. Distribute
2. Add like terms
3. Rewrite ( -3 + 6x becomes 6x + 3)

Question 5

Finding Cube root

Answer 5

Add together digits under square notation. (Cube root of 348 = 3+4+8) subtract 3 (the cube). This is the cube root.

Question 6

Finding square root

Answer 6

1. Add digits under square notation (58 becomes 5+8).
2. Subtract 2 (square root).
3. The answer is the square root of the number.