Question

Can someone explain this to me please?

Answer 1

You have to substitute the x values in to the function and solve for y.

Complete the T-table with the y-values, the points and draw a straight line through them.

For instance,
The function is


`y = - 3x + 5`

when

`x = - 1`

`y = - 3( - 1) + 5`

`\rightarrow \: y = 3 + 5 = 8`
Write 8 in the table under y next to -1


When

`x = 0`

`y = - 3(0) + 5`

`y = 0 + 5 = 5`
Fill in the T-table with 5 next to 0.


When


`x = 1`

`y = - 3(1) + 5`

`y = - 3 + 5 = 2`
Fill in 2 next to 1


Now plot the points

(-1,8) , (0,5) and (1,2)


and draw a straight line through them