Matrix question, only need help with the bottom question. please & thanks

(note i put the graph in so plz )the graph shows the amount of water that remains in a barrel after it begins to leak. the variable x represents the number of days that have passed since the barrel was filled, and y represents the number of gallons of water that remain in the barrel. what is the slope of the line

12x + 1 = 25 solve the following equation. then place the correct number in the box provided.

Write the equation for the parabola that has x− intercepts (−2,0) and (4,0) and y− intercept (0,4).