Enlarge the triangle by scale factor 0.5 using 3,1 as the centre of enlargement
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Barry found a computer at Staples for $989. A week later, the computer went on sale for $849. The percentage change is 14.156 % decrease
<em><u>Solution:</u></em>
Given that Barry found a computer at Staples for $989
A week later, the computer went on sale for $849
To find: percent of change
Percent change is the extent to which a variable gains or loses value. The figures are arrived at by comparing the initial (or before) and final (or after) quantities according to a specific formula.
<em><u>THE PERCENT CHANGE IS GIVEN AS:</u></em>
If the result is positive, it is percentage increase
If the result is negative, it is percentage decrease
Here initial value = 989 and final value = 849
Substituting the values in above formula,
Here negative sign denotes percentage decrease
Thus percentage change is 14.156 % decrease
The vertex form of parabola is,
Where is vertex point.
In this case our parabola is given by,
Hence the vertex is at .
Hope this helps.