Question

A candle is 17 in. tall after burning for 3 hours. After 5 hours, it is 15 in. tall. Write a linear equation to model the relationship between height h of the candle and time t. Predict how tall the candle will be after burning 8 hours.

Answer 1

(3,17) and (5,15)

Calculate a line equation in the usual way (x is t, y is h)

Then put t (x) is 8 to find h(y)

Answer 2

would you do y2-y1/x2-x1

Answer 3

Sure, to get the slope, then use one of the points to get c

Answer 4

i got a -1 what do i after that?

Answer 5

then use one of the points to get c

Answer 6

wait how do i do that?

Answer 7

y = mx +c You just got m, now sub one of the x,y pairs in to get c