2x - y = 0 x + y = 9
what’s are the coordinates to this equation?

Acircle has a radius of 5/6 units and is centered at (3.6, 7.8) write the equation of this circle

Parabolas y=−2x^2 and y=2x^2+k intersect at points a and b that are in the third and the fourth quadrants respectively. find k if length of the segment ab is 5.

Mikes car gets an average of 28 mpg. there are 12 gallons of fuel in mikes car when he starts his trip of 140 miles. about how many gallons are left at the end of his trip?