How to determine if these two function are linear or not

1. 2x+y=4

2.2+y=3

x 4 2

Wich graph below does not represent a function of x

How can I round significant figures on a calculator?

What is 19/6 x 6/5 with simplifying

Add President Obama inauguration in 2013 the newspaper headlines started they were about 800000 people in the attendance if the newspaper round to the nearest hundred what is the largest number and the smallest number of people who can be been there?

Suppose you bought a 6 percent coupon bond one year ago for $920. The bond sells for $940 today. a) Assuming a $1000 face value, what was your total dollar return on this investment ove the past year b) What was you total nominal rate of return on

What is the probability of getting heads when flipping a coin and getting a number greater or equal to 3 when rolling a single. die

60% of 220 is what number?

Christopher bought a new pair of shorts at the store when they were having a 5% off sale. if the regular price of the pair of shorts was $17 how much did christopher pay with the discount?

A shape can have more than 360° of rotational symmetry. True or False

If a road sign is red then it is a stop sign"" what is the converse for this statement