For the equation y = - 3x2, find:

a) Domain

b) Range

Domain s the numbers you can use

range is the result from putting the domain in

domain is all real numbers

range, see that - 3x^2, all things become positive then negative

so highest thing would be at x=0, so then the highest thing in the range is 0

test another

x=3

the result is - 27

0>-27

range is y≤0

domain=all real number

range is all real numbers less than or equal to 0

in interval notation

D = (⁻∞,∞)

R = (⁻∞,0]