Question

To graph y = x + 4, Emaan plots one point at (0,4) and a second point 2 units right and 3 units up at (2,7). He then draws a line through (0,4) and (2,7). What error did Emaan make?

Answer 1

Emaan plots one point at (0,4):

This is correct, he found the y-intercept:

`y(0)=(2)/(3)(0)+4=0+4=4`

and a second point 2 units right and 3 units up at (2,7). let's check:

`\begin{gathered} x=2 \\ y(2)=(2)/(3)(2)+4 \\ y(2)=(4)/(3)+4=(16)/(3) \end{gathered}`

This is the error, because for x = 2, y = 16/3