Which line is a graph of the equation: -2x + 5y=10

Assume that y varies inversely with x. if y=1.6 when x=0.5 find x when y=3.2

Astudent draws two parabolas on graph paper. both parabolas cross the x-axis at (–4, 0) and (6, 0). the y-intercept of the first parabola is (0, –12). the y-intercept of the second parabola is (0, –24). what is the positive difference between the a values for the two functions that describe the parabolas? write your answer as a decimal rounded to the nearest tenth

Grace paid $1.70 for 5 ounces of candy. how much did she pay for 24 ounces?