Jun 22, 2015 · According to the graph, when x is negative, y = 0. So you have to check for what values of x, you can get y = 0. y = 9x² + 6x + 4 → then you solve: y = 0 Jun 22, 2015 · According to the graph, when x is negative, y = 0. So you have to check for what values of x, you can get y = 0. y = 9x² + 6x + 4 → then you solve: y = 0 Answers (1) Give the value of a, b, and c from the standard for of the equation (2x+1) (x-2) = 0 A country's population in 1993 was 94 million. in 1999 it was 99 million Quadratic Equations. Find a,b,c. Move all terms to the left side of the equation and simplify. Tap for more steps... Subtract from both sides of the equation. Subtract from . Once the quadratic is in standard form, the values of , , and can be found. Use the standard form of the equation to find , , and for this quadratic., ,Jun 28, 2010 · Date-TimePlot.jpg (72.05 KiB) Viewed 106 times For each well, water level elevation is plotted versus each date it was measured, using the hydrometer readings data recorded in the project database. A table of minimum and maximum levels and other well data is presented below the plot.