Graphing form for linear equations in 2 variables.
3x+4y=0

i just need the x-intercept and y-intercept. i think i solved it as 0,0 for both x and y intercepts but i do not know if that is the answer or if there is another formula i need to use other than the ax+by=c.

Which equation represents a circle with a center at (–3, –5) and a radius of 6 units? (x – 3)2 + (y – 5)2 = 6 (x – 3)2 + (y – 5)2 = 36 (x + 3)2 + (y + 5)2 = 6 (x + 3)2 + (y + 5)2 = 36

Aball is thrown from a height of 139 feet with an initial downward velocity of 15 ft/s. the ball's height h (in feet) after t seconds is given by the following. h=139-15t-16t^2 how long after the ball is thrown does it hit the ground? round your answer(s) to the nearest hundredth. (if there is more than one answer, use the "or" button.) t =

Could someone with number 1 and 2