Marissa has a photograph that measures 2 in. by 4 in. She has mounted the picture on a mat so that there is a border that measur
es 1 in. around the picture. The graph shows a representation of the photograph and the mat on the coordinate grid. Marissa has decided to dilate the picture and the mat by a scale factor of 2. Draw the new image for the picture and mat on the coordinate grid.
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For equation
y = ax² +bx +c
the line of symmetry is given by
x = -b/(2a)
Filling in the given values, we have
-2 = -(-4)/(2a)
a = 4/(2(-2)) = -1
The value of "a" is -1.
y = ax² +bx +c
the line of symmetry is given by
x = -b/(2a)
Filling in the given values, we have
-2 = -(-4)/(2a)
a = 4/(2(-2)) = -1
The value of "a" is -1.