The answer is 2 hope I helped
Sara bought a new doll at a 20% off sale and saved $12. What was the regular price of the doll?
1 answer:
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Y=mx+c where m is the gradient.
If the equation is perpendicular is -
Use y-y1=m(x-x1)
and you should get
y+1=- (x+4)
4y+4=-3x-12
y=-<span></span>x - 16
If the equation is perpendicular is -
Use y-y1=m(x-x1)
and you should get
y+1=-
4y+4=-3x-12
y=-<span>
