Which coordinate plane contains the points (2 1/2 and (-4 1/2, -1)? Can’t see question real good but plz try

Keith bought a soft drink for 4 dollars and 9 candy bars .he spent a total of 31 dollars .how much did each candy bar cost?

Ageologist had two rocks on a scale that weighed 4.6 kilograms together. rock a was 0.5 of the total weight. how much did rock a weigh?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9