Which equation shows the substitution method being used to solve the system of linear equations?

x – y = 7
x = y + 3

a.
(y + 3) – y = 7

b.
x = (7 – x) + 3

c.
x – (y + 3) = 7

d.
x – y = y + 3

The first triangle is dilated to form the second triangle. select true or false for each statement. statement true false the scale factor is 0.625. the scale factor is 1.6. a right triangle with a side length of .5. an arrow points to a larger right triangle with a side length of .8