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y = 2x + 7
the equation of a line in ' slope-intercept form ' is
y = mx + c ( m is the slope and c the y-intercept )
to calculate m use the ' gradient formula '
m = ( y₂ - y₁ ) / ( x₂ - x₁ )
with (x₁, y₁ ) = (0, 7 ) and (x₂, y₂ ) = (1, 9)
m = = 2
given the point (0, 7 ) then c = 7
y = 2x + 7 ← in slope-intercept form
Answer: 54 feet or 648 inches.
Step-by-step explanation:
1. You know that 1 inch on the doll house corresponds to 1/2 foot for life-sized objects. Therefore, you can calculate the width of the full-sized house that it's modeled after, as following:
2. Then, the width in feet is: 54 feet.
3. And the width in inches is:
(Keeping on mind that 1 feet=12 inches)