f(x) =4x+1
1) <u>x= -2 </u> => f(-2) = 4·(-2)+1 = -7
f(-2) = -7
2)<u> x= -1,5</u> => f(-1,5) = 4·(-1,5)+1 = -5
f(-1,5) = -5
3) <u>x= - 1/4</u> => f(-1/4) = 4·(- 1/4)+1 = 0
f(- 1/4) = 0
4) <u>x= 0</u> => f(0) = 4·0+1 = 1
f(0) = 1
5) <u>x= </u>1 => f(1) = 4·1+1 = 5
f(1) = 5
6) <u>x= 1,5</u> => f(1,5) = 4·1,5+1 = 7
f(1,5) = 7