Which equation is not written in slope-intercept form?

a
y + 1 = 3x

b
y = -x - 7

c
y = 3x - 1

d
y = -x

Plzzzzzzzzzzzzzzzzzzzzzzzzz will give brainliest

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label

Average acceleration: i have no idea how to do this.