Question

What is the y- intercept of the fun tion described in the table?

Answer 1

for the y intercept the equation is of the form y = mx + b, where m = slope and b = y intercept, then

`m=(y2-y1)/(x2-x1)=(6-8)/(2-1)=(-2)/(1)=-2`

so, b is

`\begin{gathered} 8=-2(1)+b \\ 8=-2+b \\ 8+2=-2+b+2 \\ b=10 \end{gathered}`

answer: y intercept is 10