How do you graph y = -3+4

Solve: 3x+y=6 4x-2y=18 show all work !

The weight of full–grown tomatoes at a farm is modeled by a normal distribution with a standard deviation of 18.4 grams. the 95 percent confidence interval for the mean weight of the tomatoes is calculated using a sample of 100 tomatoes. what is the margin of error (half the width of the confidence interval)?

The value of the expression 16-^3/4 8 1/8 -6 6 1/40 1/64