write a function rule for the table.

y=

x -10, -7, -2, 6, 10

y -25, -19, -9, 7, 15

Can someone please show me step by step how to work this problem out step by step, I am so confused.

1 answer

the slope is ∆y/∆x = (-19+25)/(-7+10) = 2
So start with y=2x
But, 2(-10) = -20, not -25
So adjust by subtracting 5, and you have
y = 2x-5