The slope intercept form is
.
Solution:
Given data: slope =
and y-intercept = –1
y-intercept means (x, y) = (0, –1)
Equation of a line for slope intercept form: 
Here,
and
.
⇒ 
⇒ 
Do cross multiplication.
⇒ 
⇒ 
⇒ 
Divide both sides of the equation by 4.
⇒ 
⇒ 
Hence the slope intercept form is
.
By what percent does the price change, if the price was $100 and now it is $1250?
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x/100 = 1250/100
x = 1250 Percent
tell me if I'm wrong or not:)
If it just moved its a translation
if it got bigger or smaller its a dilation
if it flipped its a reflection
if it turned its a rotation
Deci is .1
Deca is 10
Centi is .01