(7-4) + 17 / -14 + 2 x 5

165/14

Step-by-step explanation:

(7-4) + 17 / -14 + 2 x 5

3 + 17/-14 + 2 x 5

3 - 17/14 + 2 x 5

3 - 17/14 + 10

165/14

y=x

Step-by-step explanation:

if  ( r , θ )

be the polar coordinate corresponding to the rectangular coordinate (x,y) of a point. then

x = r cos θ

and  y = r sin θ ∴ y x = tan θ

here  θ = ( π 4 )  So y x = tan ( π 4 ) = 1  ⇒ y = x