Question

A rectangle with vertices located at (1, 2), (1, 5), (3, 5), and (3, 2) is stretched horizontally by a factor of 3 with respect to the y-axis. What is the area of the image that is produced

Answer 1

Hello,

New area is 6*3=18
since only one dimension is streched by 3 the other is the same:
Area first=2*3=6
End area= (2*3)(3*1)=18

Answer 2

18 square units

Explanation:

Multiplying the x-value of each point by the scale factor gives the area.