Question

Find the function rule
X: -2, -1,0, 1, 2
Y: 9, 4 -1,-6,-11

Answer 1

notice as x increases by 1, y decreases by 5, the slope is -5, and when x=0, y=-1
so in the slope-intercept form y=mx+b, where m is the slope and b is the value of y when x=0 you have:
f(x) or y=-5(x)+(-1)
y=-5x-1

Answer 2

slope = (change in y) / (change in x)

Answer 3

so the rule is?

Answer 4

this equation y=-5x-1

Answer 5

Thank you, i became a fan :)

Answer 6

you're welcome