Question

Non linear graphs - complete the table

Answer 1

Answer:

x |  -1  0   1   2    3   4    5

y |   5  0 -3  -4  -3   0    5

Step-by-step explanation:

The given function is

$y=x^{2} -4x$

We need to find the y-value for $x=-1$, $x=1$, $x=2$ and $x=4$.

For  $x=-1$

$y=(-1)^{2} -4(-1)=1+4=5$

For $x=1$

$y=1^{2}-4(1)=1-4=-3$

For $x=2$

$y=2^{2}-4(2)=4-8=-4$

For $x=4$

$y=4^{2} -4(4)=16-16=0$

Therefore, the complete table would be

x |  -1  0   1   2    3   4    5

y |   5  0 -3  -4  -3   0    5