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Which of the following linear functions is decreasing?
f(x)=2x+2f\left(x\right)=2x^{ }+2f(x)=2x+2
f(x)=−2x+2f\left(x\right)=-2x^{ }+2f(x)=−2x+2
f(x)=x+2f\left(x\right)=x^{ }+2f(x)=x+2
f(x)=−x+2f\left(x\right)=-x^{ }+2f(x)=−x+2
f(x)=3x+2f\left(x\right)=3x^{ }+2f(x)=3x+2
f(x)=−3x+2f\left(x\right)=-3x^{ }+2f(x)=−3x+2
f(x)=xf\left(x\right)=x^{ }f(x)=x
f(x)=−xf\left(x\right)=-x^{ }f(x)=−x
Which of the following quadratic functions is decreasing?
f(x)=x2,x≥0f\left(x\right)=x^2,x\ge0f(x)=x2,x≥0
f(x)=−x2,x≤0f\left(x\right)=-x^2,x\le0f(x)=−x2,x≤0
f(x)=x2,x≤0f\left(x\right)=x^2,x\le0f(x)=x2,x≤0
f(x)=−x2,x≥0f\left(x\right)=-x^2,x\ge0f(x)=−x2,x≥0
Which of the following absolute value functions is decreasing?
f(x)=∣x∣, x≥0f\left(x\right)=\left|x\right|,\ x\ge0f(x)=∣x∣, x≥0
f(x)=−∣x∣, x≥0f\left(x\right)=-\left|x\right|,\ x\ge0f(x)=−∣x∣, x≥0
f(x)=x2−2 , x≤0f\left(x\right)=x^2-2\ ,\ x\le0f(x)=x2−2 , x≤0
f(x)=−x2+2 , x≥0f\left(x\right)=-x^2+2\ ,\ x\ge0f(x)=−x2+2 , x≥0
f(x)=∣x∣, x≤0f\left(x\right)=\left|x\right|,\ x\le0f(x)=∣x∣, x≤0
f(x)=−∣x∣, x≤0f\left(x\right)=-\left|x\right|,\ x\le0f(x)=−∣x∣, x≤0
f(x)=x2+2 , x≤0f\left(x\right)=x^2+2\ ,\ x\le0f(x)=x2+2 , x≤0
f(x)=−x2−2, x≥0f\left(x\right)=-x^2-2,\ x\ge0f(x)=−x2−2, x≥0
It is done.