Question

At 78°F, a certain insect chirps at a rate of 91 times per minute, and at 81°F, they chirp 103

times per minute. Write an equation in slope-intercept form that represents the situation.

Answer 1

y = 4x - 221

Explanation:

x = 78, y = 91

x = 81, y = 103

Slope:
`m=(103-91)/(81-78) =4`

Using
`y-y_1=m(x-x_1)`

⇒
`y-91=4(x-78)`

So
`y=4x-221`