Answer:
Step-by-step explanation:
for the first one:
first find the original slope from the given points using the equation:
y2-y1 / x2-x1
x1= 7 y1=4
x2=-2 y2=10
(the coordinates can be either 1 or 2 they just have to correspond with their other value)
now we solve
10-4 / -2-7
6 / -9
2 / -3=k
now we multiply by the factor of 1/2
(dialated means that the 1/2 value actually equals 2 since it would be considered b (b is 1/b in the equation) and 1/ 1/2 is 2)
2/-3 *2/1
4/-3
for problem 2:
to find the scale value we would need to divide the new value of x by the original value which would be
QR/NP
problem 3:
to find the scale factor use the points plotted and the equation previously mentioned
F (1,9) E (-7,-3) B(-1,-2) C(3,4)
-7*1 / -1*3
-7/-3 is the scale factor
