Simplify. #1.

9^2-1



4+6^2-10

#2.

10(19-4^2)



7+3^2-1

(1,4) is on graph of f(x)

f(1) = 4

so 1/4 f(x)

1/4 f(1)

1/4. ×4

1

so point for function 1/4. f(x) is (1,1)

the line of