Question

Evaluate the function rule to find the range of each function for the domain {-3, 0, 5}.
y = -2x + 6



A. {-6, -4, 0}
B. {-4, 0, 6}
C. {-4, 6, 12}
D. {6, 12, 16}

Answer 1

y=f(x)=-2x+6
x take values -3,0,5
f(-3)=-2(-3)+6=6+6=12
f(0)=-2(0)+6=0+6=6
f(5)=-2(5)+6=-10+6=-4
so range={12,6,-4}={-4,6,12}