Question

if a trend line had the equation
`y = - 2.1x + 0.43`what y value would you expect to obtain when x has the following values:a. 15b. 0c. 4.5d. 7.1

Answer 1

hello

to solve this question, we just need to imput the value of x and solve the equation to get y

a. when x = 15

the equation is

`\begin{gathered} y=-2.1x+0.43 \\ x=15 \\ y=-2.1(15)+0.43 \\ y=-31.07 \end{gathered}`

when x = 0

`\begin{gathered} y=-2.1x+0.43 \\ x=0 \\ y=-2.1(0)+0.43 \\ y=0.43 \end{gathered}`

when x = 4.5

`\begin{gathered} y=-2.1x+0.43 \\ x=4.5 \\ y=-2.1(4.5)+0.43 \\ y=-9.02 \end{gathered}`

when x = 7.1

`\begin{gathered} y=-2.1x+0.43 \\ x=7.1 \\ y=-2.1(7.1)+0.43 \\ y=-14.48 \end{gathered}`