How do you solve this equation and graph it? i'm so confused.

y= -2x

Ashopper bought a watermelon a pack of napkins and some paper plates in his state there was no tax on food the tax rate on non-food items is 5% the total for the three items he bought was 825 before tags and he paid $0.19 in taxes how much did the watermelon cost

The function show two sisters' savings account and the rate at which they plan to deposit money

Let x = a + bi and y = c + di and z = f + gi. which statements are true?