If the formula D(x,y) = (.7x,.7y) is applied to pre-image point (5, -7), what is the image point?
well, how about (.7*5,.7*-7) = (3.5,-4.9)
To find the image point when applying the formula D(x, y) = (0.7x, 0.7y) to the pre-image point (5, -7), we need to substitute the values of x and y into the formula.
Let's calculate the image point step-by-step:
1. Start with the pre-image point (5, -7).
2. Apply the formula D(x, y) = (0.7x, 0.7y) by multiplying each component of the pre-image point by 0.7:
(x, y) = (0.7 * 5, 0.7 * -7)
3. Calculate the products:
(x, y) = (3.5, -4.9)
Therefore, when the formula D(x, y) = (0.7x, 0.7y) is applied to the pre-image point (5, -7), the resulting image point is (3.5, -4.9).