Estimate the product: 4.9 x 82

What term makes it inconsistent y=2x - 4 ?

Does the point (1, sqrt 7) lie on circle shown.

Which values of p and q result in an equation with exactly one solution? px-43=-42x+q choose all answers that apply: a) p=-43 and q=-43 b) p=42 and q=43 c) p=43 and q=−42 d) p=42 and q=42