Question

Expand the graph of y=x vertically by a factor of 2. Then, translate the result 3 units to the left and 5 units downward. Compare the result to the graph of y=2x+1. Explain your findings.

Answer 1

Why is it equal? O.O

Answer 2

we start with y =x

say we have a point on the line (x,y)

we want to stretch it vertically so it maps to the new point (x,2y)



(to be continued)

Answer 3

okay

Answer 4

so now the new equation is y = 2x as when we put in an x value, we get twice what we used to as y